The Speed of Light is EXTREMELY Slow

Though it's notorious for being extremely fast, the speed of light is actually very slow! So slow in fact, that even a snail is faster!
In this video we'll find out how the speed of light is so slow and explore some other interesting facts about light.
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Chapters:
00:00 Introduction
00:35 What is light made of?
02:29 Light vs Sound
03:12 Comparing the speed of light
07:22 The speed of light is slower than a snail

[@ace-gineering]

I would argue that light is actually fast. If you're going to use cosmic distances (like from Earth to Proxima Centauri) you have to use cosmic timeframes as well. 4 years is basically nothing on a cosmic scale, making light fast for the universe (although maybe not for humans).

[@emreevo8]

Not.

[@Henrix1998]

Basically our brains are just too fast. If we lived 100 times longer and thought 100 times slower, it wouldn't make a difference for us but we could travel to Neptunus in 2.5 minutes (relatively)

[@slurples149]

Yeah I think he's referring to humans clock

[@GuidoHaverkort]

You could say... it's relative

[@mrme-le9sy]

i agree

[@tokajileo5928]

Important fact: if you travel at the speed of light your time stops so you are immediately at your destination. If you travel 99% speed of light, the 4 light year journey to Proxima centauri only takes a couple of weeks for you. Of course you have to slow down at arrival but that is another issue. so the time in this video is representing the time of how an outside observer experiences the traveling of the spaceship and not the people ON the spaceship.

[@oddball119]

And a single hydrogen atom can make you dead before you even know it.

[@_dajo]

That is so confusing I’m too dumb to understand

[@hodayfa000h]

oh ok so time stops for them and works for us? or the opposite

[@koshy9996]

@@hodayfa000h I'm not really good with Physics, but based on what I understand watching YT videos like these below is what I think would happen. Note: Anyone with the correct explanation, please do correct me if I'm wrong. 😊👍 I think what he means is since the Universe we see is just the past Universe and not the present Universe (like we see our Sun 8 minutes in the past), for the people in the spacecraft, when they have already reached the Star or destination, when we being the stationary observer watching it from outside, we will still see the "old/past" light reflected from the spacecraft, giving us a misconception that the spacecraft is still travelling because we see their past, and they do not really exist at the place at the present where we see them. Maybe I did confuse more. 😅🙏

[@hodayfa000h]

@@koshy9996 ohhh ok

[@Linuxdirk]

This doesn't show how slow the light is, it shows how absolutely huge the universe is.

[@TheChosenFailure]

it shows both, it's all relative, on the scale of the observable universe light is a slow mode of transport.

[@skycloud4802]

And that's just the observable universe.

[@mrwhosmynameagain]

Exactly, the entire premise of this video is absolutely ludicrous. Nothing, absolutely nothing can move faster than the speed of light, except for photons which are light particles. This is just absurd

[@mrwhosmynameagain]

@@TheChosenFailure literally nothing can move faster than light so no, it's not slow whatsoever at all. It's quite literally the fastest thing in the entire universe

[@tndbairbass]

Because of this fact, scientists won't make progress and eventually technology will come to an halt. So for whatever reason if NASA wants to space travel that nearest star; it wouldn't be plausible since we are so hopelessly different than the rest of the universe. Everyone will acknowledge that we wouldn't be able to make meaning through the barrier of our solar system which we were supposed to stay.

[@killa5963]

Everything is affected when you use a scale. However, oddly enough, this helped me understand the scale of the universe much better than videos mainly featuring it.

[@BlenderTimer]

Yeah, it's really hard to understand the true size of things when they are so far different from our size that you can't really compare them to anything!

[@NotError404Sans]

​@@BlenderTimerlight is actually fast it's not slow at all the fact is that an orbit around the universe takes 46-93 billion light years and of course a snail will do alot of orbits around Neptune around that time it's the fact the universe is infinite and expanding alot

[@tonestones9445]

​@@NotError404Sans l agree but it doesnt take light that long to travel around the universe.... It would take.. Not enough time has lapsed since the big bang to even be a third into such a journey 😂👍

[@TheSameEntity]

Well done. Even if a viewer knows most of the information, you conveyed it in such a compelling way that it was an excellent watch! I'm one of the first 100 subscribers

[@BlenderTimer]

Thank you! I tried to make it engaging even for those who knew the information already. Glad it worked out that way!

[@nikhithhm]

Well said. Really well put known things into perspective

[@barabasbulcsu3102]

0:10 km/s insted of m/s

[@barabasbulcsu3102]

@obimk1 yeah, I was wrong sorry I had in mind that the speed of light is 300000km/s and then I saw that that number and on the back"m/s" only then I realised that it had an extra 3 digits

[@aidenworld2755]

@@BlenderTimer the speed of light is only slow compared to the universes size

[@RGC_animation]

However, due to time dilation, the amount of time that you felt when traveling is probably much shorter and can actually be a reliable way to travel.

[@tomb5372]

Problem is that it takes an infinite amount of energy to reach the speed of light. The entire universe doesn't have enough energy. So you'd get nowhere close to the speed of light, and then it's still going to be an eternity to get anywhere.

[@RGC_animation]

@@tomb5372 Yeah but it's a hypothetical situation.

[@woahscape]

ok i understand the time dilation from observer's perspective. but i simply cannot understand how does your body not age at the speed of light... i can understand perception of time also being affected, but just can't grasp the aging process

[@tumultuousv]

@@tomb5372 how do we know it takes an " infinite " amount of energy

[@mrsauce9307]

@@woahscape Dammm I been wondering the same thing

[@halilibrahimustun50]

Woow. The way you explained it is extraordinarily good. The animations, that subtle touches, man you deserve millions. Top notch quality. Keep it up!

[@BlenderTimer]

Thank you so much!

[@samuelhakansson6680]

It's also very wrong.

[@ahmedrommani3698]

The guy who built the ship and spent more time than the universe existed traveeling it is an absolut beast, hats off to him

[@ayham95]

Actually, when you travel near the speed of light, you can reach anywhere you want in the universe in matter of seconds ;). Relativity baby !

[@MrInuhanyou123]

​@@ayham95that isn't really true. It's only for you personally but time still moves regardless for everything else. So it's not instant like you can go somewhere within no time. You just can't perceive that time has passed

[@Syuvinya]

Well according to relativity, for the passengers on the ship, they would travel any distance instantly. So, the speed of light is actually infinite from their perspective. Too bad the ship will instantly collapse into a blackhole with infinite mass. Edit: OK yeah i got some relativity wrong but reaching the speed of light does create some form of singularity, gravitational or not.

[@BlurryfaceOfc]

I think the spaceship is too small to become a blackwhole but passengers thing is really fun to think about

[@Syuvinya]

@@BlurryfaceOfc This has something to do with special relativity. In special relativity, there are two types of mass: rest mass and relativistic mass. Rest mass is what you think of when someone talks about mass, while relativistic mass of an object is calculated by m_rel = m/(1-v^2/c^2)^(1/2), where m is the rest mass of the object, v is the speed of the object, and c is light speed. As you can see, as the speed of the object approaches light speed, the denominator of the formula decreases, which means the relativistic mass increases. When the speed of the object is infinitely close to light speed, the demoninator is approaches 0, which means the relativistic mass is ∞, if the rest mass of the object is above 0. This means anything heavier than a photon would into a blackhole, or singularity.

[@BlurryfaceOfc]

@@Syuvinya I didn't knew that Thanks for telling me :)

[@Verax0]

@@Syuvinya actually it would not colapse into a black hole. Special relativity says that the closer that mass gets to the speed of light more more energy is required to accelerate to that speed, until you need an unimaginable amount of energy to speed up the slightest bit. Making it impossible for mass to travel at that speed. You are right about the instantaneous travel. Although outside observers see light traveling through space quickly, a observer that is traveling at the speed of light would perceive it as instantaneous

[@Syuvinya]

@@Verax0 yes right but in this hypothetical situation the ship is accelerated to lightspeed, which means it has infinite energy, and thus infinite mass, which means it does collapse into a blackhole.

[@slavsquatsuperstar]

Props for this guy for building a spaceship and traveling around the universe. Definitely looking forward to your future videos.

[@Nate65Dawg]

And props to the camera man who went way beyond the observable universe to film the wide-angles

[@andrebruce2371]

@@Nate65Dawg these jokes are corny and overused and not funny

[@Spacebug111]

@@andrebruce2371🤓

[@milchpackungszertreter6769]

@@andrebruce2371 🤓

[@wildenboy_]

@@andrebruce2371 wdym by "corny"?. Like a pop corn? But add y?

[@FebruaryHas30Days]

1:48 *THE COLOR DIFFERENCE BETWEEN GREEN AND BLUE, COMPARED TO THE OTHERS IS BLINDING ME*

[@FebruaryHas30Days]

And there are actually 12 colors in a rainbow.

[@rogerphelps9939]

Actually if you travel close to the speed of light the elapsed time for you can be very short even for vast distances. You could set off and arrive in the Andromeda galaxy tomorrow. The problem is that getting to such speeds requires stupendous amounts of energy, far more than your rest mass energy.

[@markmorris76]

Yes and spplies etc. To the space travelers it would be instant but if they came back to earth it would be 5 million years later.

[@CoolShadesX]

I was looking for this comment after I face palmed several times. I’ll glad all that PBS space time didn’t go to waste.

[@Kingdom-zu6tm]

If we learn how to harness the energy from a black hole, this wouldn't be an issue

[@kujojotarostandoceanman2641]

​@@Kingdom-zu6tmthe main issue is still your body and anything we can build would instantly collapse and turn into a smoothy with that amount of energy and speed

[@rarebeeph1783]

the fun thing about the speed of light is that, for observers on the ship, they would feel like they get there instantly (because the length to the destination would contract to 0). observers on the ground, on the other hand, explain the younger age of the passengers by that those on the ship had their time dilated to infinity, and so none passed for them during the trip. if i were to write a science fiction story, i would probably lean into this, and express speeds not as velocity (or even rapidity, for that matter) but as the value of the lorentz factor ɣ correlated with your chosen velocity, as when it's above 2, you can reasonably approximate the time you will experience while crossing a (non-expanding) distance of n light years as n/ɣ. (for v approaching c, ɣ tends to infinity obviously)

[@DJNiems]

Beat me to this! Yeah, pretty cool that if you (could theoretically) travel in a ship at the speed of light, it would be as if you teleported to any point in space (within the cosmological horizon) instantaneously; albeit your destination has probably changed or moved quite a bit since then (but such a race with such technology could probably account for this).

[@michaelbariso3192]

Time and distance cannot be relative to other objects in space-time as that would violate the law of conservation of energy. To travel distance requires potential energy, an observer can have no effect on a moving objects kinetic energy-Relativity debunked. Light travels in both directions, anyone having a conversation with their friends understands this simple phenomenon yet Einstein's disciples believe people on earth are time traveling backwards and forwards in space-time relative to one another. Testing the speed light in on Earth is like riding a bicycle up hill, gravity will show you down. If the light waves from the sun were 8 minutes and 20 seconds in a past dimension of Einstein's space-time then people on Earth are just imagining the infrared warmth of the sun coming up on the horizon. The communications delay between Earth and Mars is approximately 20 minutes. We're either viewing the light from Mars in the future, Einstein's past dimensions of space-time or in real time, which do you think is more logical? Einstein's relativity is wrong light has no limitation of speed; it cannot be slowed down because it isn't moving. From every vantage point in the universe light is omnidirectional-instantaneously traveling in both directions. Light and electromagnetic waves are independent of each other. According to Einstein's relativity-time dilation's, photos taken of the Earth from the Discovery Space station traveled from the past to the future violating the laws of physics, conservation of energy and common sense. According to Einstein's projectile light particle proton light has a (constant speed) of 186,000 miles per second moving through spacetime, but if light has a (constant speed) then moving clocks cannot run slow through spacetime! :-) The speed of light according to Einstein's relativity is 186,000 miles per second, but according to physics if two mechanical watches were synchronized on earth and one traveled across the universe and back, there would be no difference in time between the mechanical watches proving the speed of light is instantaneous as the only way a mechanical watch will run slow is if you tighten the main spring. Big Bang, Einstein's relativity-time dilation and nearly all of science debunked. Using optical clocks, lasers and GPS to prove Einstein's time dilation-space-time curvature is like using a metal detector to find gold at Fort Knox. The closer you are to the electromagnetic fields, mass and gravity of the earth the more light bends aka gravitational lensing. If the speed of light is constant then past and future dimensions of spacetime and an expanding universe would not be possible, obviously destroying the twins paradox as each twin cannot move faster or slower than the other. A mirror is a wave reflector that flips images from left to right, but according to Einstein the images you see are the result of projectile light particle photons being transported into past and future dimensions of space-time. Explain how particle light photons can re-converge their molecular structures in mirrors and how this is done without violating the law of conservation of energy. From every vantage point in the universe light is omnidirectional-instantaneously traveling in all directions (forwards and backwards through Einstein's space-time) while violating the law of conservation of energy. Explain how Einstein's projectile light particle proton can travel all directions having a (constant speed) of 186,000 miles per second. Einstein would have made a great used car salesman :-). Light waves can stretch, bend-curve and occupy a state of superposition, whereas the hypothetical Einstein projectile light particle (photon), a particle that has never been observed cannot. Unlike a TV or computer monitor the images we are viewing in the universe are in real time, not a series of frames that create the appearance of a moving image. There are no DCU digital convergence circuits in space yet Einstein's disciples believe the light and moving images they see in the universe aren't really there, they're just video recorded images of the past 13.8 billion years. You could lead a cult to water, but you can't make them think. Neither time, energy nor mass can create itself into nothing, reside in nothing or expand into nothing simply because nothing has no properties. Time and space are independent of each other, not material bodies or fantasy unions that magically stretch Time, energy, and matter like a rubber band into space-time dimensions. Einstein's projectile light particle proton has a (constant speed) of 186,000 miles per second moving through spacetime and because so wavelengths of light cannot stretch through spacetime! Red-shifts are simply the result of decelerating electrons, as moving electrons of charged electromagnetic waves-light travel through the plasma of the universe each lump (or "quanta") of energy in the electromagnetic waves are charged then discharged to the next lump, eventually the energy dissipates causing the delay in radio communications giving the appearance of time dilation - longer wavelengths in red shift. Will the James Webb Telescope view the birth of the first galaxies? Nope, the universe goes on to infinity. Neither time, the atom, energy nor mass can create itself into nothing, reside in nothing or expand into nothing simply because nothing has no properties. The James Webb Space Telescope is not a time machine, you can’t travel back in time to view the beginning of the universe with telescopes that were made in the future :-). Light and electromagnetic waves are independent of each other. If science uses Einstein's wrongly theorized speed of light like an odometer to calculate past dimensions of distance and time, then using that same method to calculate forward dimensions of distance and time would mean the Big Bang was created and expanded in the future before time existed. Unlike a television or computer monitor the images we are viewing in the universe are in real time, not a series of still image frames that hypothetical Einstein projectile light particles photons create to give us the appearance of a moving image :-). The speed of electromagnetic wave is 186,282 miles per second vs Einstein's projectile light particle proton at 186,000 miles per second. Is this a coincidence or did Einstein plagiarize yet another phenomenon to fit the math of relativity? Electromagnetic waves in space can neither slow down or speed up, this is consistent with the law of conservation of energy. If light slowed down, its energy would decrease, thereby violating the law of conservation of energy so the speed of light is instantaneous and cannot travel slower than it does. If Einstein's projectile light (particle photon) had mass it's light could not travel across the universe, high speed particles traveling at 186,000 miles per second would break the Hubble and James Webb telescope mirrors, debunking the speed of light, Big Bang, Einstein's relativity and any science that uses relativity in their theories. Similar to a mirror light is a real-time wave reflector where light and images travel in straight lines-in all directions in space as they do on earth. The faintest stars and galaxies are neither in a past or future dimension of Einstein's space-time, they're in real-time. Everyone knows cell phone electromagnetic radio waves travel both ways, yet Einstein's disciples believe time energy, mass and light can only travel one way back in time. If you simply run the Big Bang theory in reverse you reveal the insanity of Einstein's relativity and Big Bang theory. If the expansion of the Big Bang were true, time, energy, mass and light would be in the future from the vantage point of an expanding singularity-Big Bang and planet Earth would now reside in a past dimension of Einstein's time dilation (moving clocks run slow) space-time 13.8 billion years ago :-). From every vantage point in the universe light is omnidirectional-instantaneously traveling in both directions (forwards and backwards through Einstein's space-time) while violating the law of conservation of energy. Explain how Einstein's projectile light particle proton can travel in both directions having a (constant speed) of 186,000 miles per second :-) It's truly amazing how the science and politics of the left are able to keep people denying reality, there are no DCU digital convergence circuits in space, yet Einstein's disciples believe the light and moving images they see in the universe aren't really there, they're just recorded images of the past 13.8 billion years. Pretending not to notice the gross contradictions-pseudoscience in Relativity is typical of Einstein's disciples, devaluing the source of any information that's in contradiction with their beliefs-theories. You could lead a cult to water, but you can't make them think. If the light from the universe travels to past dimensions of time then it's light is also traveling into future dimensions of time (instantaneously). “And God said, Let there be light: and there was light.” a state of superposition where time and gravity run inwardly, outwardly, in all directions in the same time frame, similar to the electromagnetic field having no beginning and no end. The Doppler effect is wrongly conflated with cosmological Redshift. As one approaches a blowing horn the perceived pitch is higher until the horn is reached, then becomes lower as the horn is passed. This phenomenon is caused by the physical movement of a mechanical soundwave traveling through the medium of air, similar to throwing a rock in a pond, the rock creates physical movement in the medium of water. Cosmological Redshifts are merely the GoPro fisheye effect where wavelengths appear to lengthen-stretch from the phenomenon of gravitational lensing. "I am the Alpha and the Omega, the First and the Last, the Beginning and the End" Magnetron

[@rarebeeph1783]

@@michaelbariso3192 Literally the only requirement for special relativity, i.e. the theory from which my comment was derived, is that light will always take the same measured time to travel to and then return from a point at the same measured distance in a vacuum in any direction for any observer. That is to say, the two-way vacuum speed of light (c) is constant. This has been conclusively measured, repeatedly verified, and practically no evidence has been found contradicting it. As such, the mathematical consequences of such a property must follow. These consequences (specifically, that we must use the lorentz transform to mathematically model a change of inertial observer, that being the linear transform such that all observers agree on what c is) have also been conclusively measured and repeatedly verified. To disprove special relativity, you need to disprove that light has a constant speed (with all the caveats mentioned above). Unfortunately, saying "it doesn't make sense" doesn't disprove it. It has been measured many times to be as true as we can measure something to be, so to disprove it, you would need to be able to consistently, reproducibly perform measurements which show it to be slightly false--and by the volume of our extant measurements, it could only ever be slightly.

[@seb.k3871]

Hyperion by Dan Simmons does exactly this, it is described as 'time dept' you should give it a read, its one of the best science fiction works of all time.

[@rarebeeph1783]

@@seb.k3871 Nice, I'll look into it!

[@paul.facciolo6985]

I think the best thing that made me originally realize how slow the speed of light is was elite dangerous. That game does an excellent job of putting into perspective how unfathomably big the galaxy let alone the universe is.

[@svenkozelenko7757]

It also conveyed just how empty and spaceous space is, and how much space there is between some objects. Looking at you, Hutton orbital.

[@Drummerx04]

Awesome reference. It's definitely a fun game for the kind of awe inspiring for exactly the reason you stated lol

[@ok2635]

Same with No mans sky

[@MGSLurmey]

@@ok2635 I wouldn't agree with No Man's Sky so much, as each system in NMS consists of just a few planets and a space station, all stationary in space, and all *way* too close together. Your pulse engine propels your starship at 4000ks, or 4,000,000 units per second. Assuming units equate to meters, that's still only 1.3% the speed of light, and yet still you arrive at any destination in just a few minutes. Comparing that with travelling to Neptune *at* the speed of light taking over 4 hours shows how still absolutely minuscule the scale of NMS is. If you could travel about *75 times faster* (aka C) with the pulse engine and still take a few minutes to get to places, the systems would be about as wide as the distance from the sun to Mercury, our *closest* planet to the sun. Still not even close to the scale of the whole solar system. Again, this is assuming the pulse engine was 75 times faster than it actually is, so the systems are roughly 75 times smaller than Mercury's distance from the sun. That puts a rough estimate of the size of No Man's Sky's systems at 920,000 km. Earth is 12,742 km across, so it's about 72 Earths across give or take. That's big, but the orbit of Pluto can fit roughly 926,071 Earths end-to-end. Don't get me wrong, I absolutely adore the game. It's just not at all a realistic representation of the sheer magnitude of space. Though, do bear in mind that this all hinges on the rough estimate that it takes "a few minutes" to fly across the system (and orbits aren't circular), so none of this is going to be perfectly accurate, but it'll be in the ballpark.

[@ok2635]

@@MGSLurmey K

[@nimasaadatfard4075]

Massive respect for going faster than the speed of light

[@PrivateerJimmy]

IQ: -999

[@Sweze]

He just said that cause they go at a speed of light but then speed it up, thus making them theoretically going faster than the speed of light

[@ka-uy8yh]

​@@PrivateerJimmyyou're the dumb one 🤷

[@ka-uy8yh]

​@@Sweze5:30

[@Gooburst4771]

in irl its impossible mentally and physically to go faster than light unless ur a spiritual being that were u think of something u get teleported there instantly

[@The_Official_You]

This *really* shows how small we are compared to the universe and it’s amazingly scary

[@anjumarareaper5128]

That is just the Universe we see. Its bigger.

[@wlockuz4467]

There is a catch tho, If you hit the speed of light, you'll be at the maximum time dilation which would make you stop experiencing time. So what would seem like 300 billion years to outside observers, would be quite literally instantaneous for you! On a side note, your channel is underrated as hell! Earned a sub.

[@speedoflight3395]

So you mean if you’re to travel from one end of the universe to the other end which is about 90 billion light years wide would be instantaneous for someone travelling at the speed of light ? There’s no way 90 billion years can feel instantaneous.

[@wlockuz4467]

@@speedoflight3395 First of all, fitting name haha! I admit my comment is a bit exaggerated, since for it to feel truly instantaneous you would have to go from 0 to c instantly in the first place which seems impossible, so practically speaking, as you start speeding towards c you'll start experiencing time slower and slower, because according the theory of special relativity / time dilation, the faster you move through space, the slower you experience time, and if the theory holds throughout, once you reach c you should stop experiencing time at all, thus making it feel near-instantaneous when you reach your destination, but of course its kinda impossible to imagine what that would be like because we have evolved with the idea of constantly flowing time. Unfortunately as far as our knowledge goes, its impossible for something with a mass to travel at the speed of light so we may never be able to find what its truly like to travel at the speed of light.

[@speedoflight3395]

@@wlockuz4467 We humans may never be able to completely grasp the idea of “Not experiencing time” at the speed of light. We are only used to the normal 24 hours clock time on earth. Universal time is in no doubt something really different from what we are used to on earth

[@speedoflight3395]

@@wlockuz4467 A being who doesn’t recognise the concept of time may be travelling for 90 billion years and of course when it reaches its destination 90 billion years could feel instantaneous because to it time doesn’t exists. But to someone observing that object travel 90 billion years would know that the object has been travelling for 90billion years. It’s not like in reality the travel has been instantaneous. I’m just saying tho as I don’t absolutely understand this.

[@wlockuz4467]

@@speedoflight3395 I know its hard to fathom the idea that time can tick differently for two different observers, but the theory is tried and tested, we haven't observed any extreme cases of time dilation yet but we have seen enough cases with small amount of time dilation that proves Einstein's theory. Here are a couple of videos from Veritasium that can probably do a better job of explaining it than I can Einstein's original thought experiment kzbin.info/www/bejne/rIeud3WXlrFnq68 Sophisticated scientific experiment that confirms the theory of time dilation kzbin.info/www/bejne/l3zae5SvjbmNi9U

[@kahverengi]

Never seen a represantation of light with snails this is mindbending 🔦

[@technicalbunny7210]

100 likes?

[@kcav1255]

Considering the amount of energy it takes us to accelerate a single electron to a mere fraction the speed of light, imagine the energy needed to move a space ship even close. That's a completely impossible magnitude of scale that must be surmounted if we are to ever leave this solar system.

[@JO11190]

Such a good video production man. Subscribed.

[@BlenderTimer]

Thank you!

[@sebbasbaoz8314]

I have to say, that unironically, it's really good that you did that snail thing at the end, because we, humans, aren't capable of realising in our minds how ridicilously big that number at the end was, or how fast or slow the speed of light is, so saying that a snail can travel around Neptune about 3000 times before we can get around the universe once at the speed of light really did let me know how slow it is, relatively to the observable universe. I recommend doing those types of comparisons more often, just to make people realize and relativize the numbers more effectively! Great video!

[@Blox117]

problem is, no one intuitively understands how big neptune is, or the speed of a snail since no one actually experiences that

[@sebbasbaoz8314]

@@Blox117 True, it would've been even better if there was a more relatable example given, but that is pretty difficult, because if it's like you could crawl to the supermarket this many times before you travel around the universe at light speed, it would probs be billions of times or something, making it unrelatable again

[@VincentHermes]

Problem is, that the universe would have expanded way too much until this point is reached, but yes

[@RinkieGeintie]

It wasnt around neptune, but the orbit of neptune

[@sebbasbaoz8314]

@@RinkieGeintie the orbit of neptune goes around neptune though..

[@LordMoldoma]

“Light believes it is the fastest thing in the universe, but no matter how fast it travels, wherever it goes, it finds the darkness had already made it there first.” ~ Terry Pratchett, Reaperman

[@mxn5132]

Light is reality. Darkness is unreality. Light exists, darkness doesn't. Darkness is just a lack of light just like hunger is a lack of eating. You need food to cancel out hunger just as you'd need light to cancel out voids. -Terry Pratchett is Terrybly wrong

[@LordMoldoma]

@@mxn5132 I can tell you’re the kind of nerd that not even other nerds want to hang out with.

[@mxn5132]

@@LordMoldoma Voids are not a real scientific concept. If you had said tachions or dark matter that would have been a whole lot believable than the speed of darkness. Come on now.

[@mxn5132]

For a second there I didn't consider Terry Pratchett as a writer but a theorist.

[@mariotheundying]

@@LordMoldoma I mean he's right if we're talking in a science standpoint, which is the video, the quote lacks context

[@swiggetyswoner9036]

So in star wars they just casually travel to another system in less than an hour, but they still call it lightspeed.

[@delenter3296]

Well, if you travel at a speed of light time stops around you

[@tuareg8311]

​@@delenter3296Bingo 🎯👍

[@Fearless_Kat]

0:35 appreciate the subtle nod on such a video. Feels refreshing to hear.

[@Linguae_Music]

Light speed is slow to outside observers... But if you are moving at the speed of light then your travel is instantaneous, as light does not experience time. An observer may see light take millions or even billions of years to travel between galaxies... but to the photon this takes an infinitely small amount of time to travel :D it essentially teleports to the future from its own perspective. Relativity is kewllllll

[@jimm638]

true. i would like to change it a bit to say that if you were light, from your perspective you were and always have been where others observe you traveling to so you would not know you have traveled anywhere.

[@paulromsky9527]

@@jimm638 Yes, this ties in with "entangled photons", since they travel at the speed of light, their whole existence is but a moment. So at the quantum level, where Einstien's Light Cones of the past and future meet in the now (which is only 1 Plank length/time), the curvature of the cones is hyperbolic not linear, hence any change in angular momentum can cause the photon to pass info about its present state, into the hyperspace of the now and go back 1 Plank space/time. But the instant something goes back in time, it can go the back to the Big Bang if it had to in order to react with its pair to effect the outcome (simultanoues flip) in the now instantly. The entire past is always effecting the now no matter how far back. So at the quantum level, paradoxes are happening all the time, but they are limited to individual moments of 1 Plank space/time. This is why the universe is so chaotic at that level. What we see at our level is a smoothing of those short lived and local paradoxes as the now becomes the next moment into the future.

[@ChrisRaynorMD]

Great explanation! Great way to visualize the vastness of our universe and the relative speed of light.

[@BlenderTimer]

Thanks! Glad you enjoyed it!

[@NATIK001]

Well the benefit to traveling at 1c (somehow) is that it doesn't matter how long it takes to get somewhere, you always experience that you arrive instantly, though the universe around you will have aged by your "travel time." So as long as you didn't care about anything you left behind, if you could somehow build a 1c spacecraft which required no refueling or infrastructure, you could technically explore significant chunks of the universe, although most of it would still be out of range due to the expansion of the universe itself causing most of the universe to expand beyond the reach of even a 1c capable spaceship. All of this explains why traveling at or very near to 1c isn't useful at all before you even get into the impossibility of actually creating a ship capable of this feat.

[@rogerdouglas2306]

you should have kept each star on the map for a better comparison to the distance from each other. it was really hard to grasp the speed with just watching numbers get bigger

[@justynpryce]

This video taking into account relativistic effects of the ship would be very interesting, as it would make the speed of light seem significantly faster than it is

[@dannypipewrench533]

The spacecraft would also suddenly have infinite mass, and then would become a singularity.

[@WilliamWizer]

which is why, precisely, doesn't take into account relativistic effects.

[@mage3690]

If you assume a constant acceleration of 1g (so you get close to the speed of light fairly quickly and avoid the nasty effects of living in microgravity for decades), it would take about 53 years in ship time to circumnavigate the universe. Someone much smarter than me calculated that ship time for any relativistic trip at 1g constant acceleration is equal to arccosh(1 + D) where D is measured in lightyears. Of course, if you want to reach your destination at something less than 99.99% of c, you'll want to flip over half way and decelerate at 1g for half the trip, so the full formula is 2 arccosh(1 + D / 2), which is where I got 53 years from. If you _don't_ wanna slow down, you can shorten you journey to a mere 27 years! (and a couple days) Also, that formula was algebraically derived by a Quora user, based on a Wikipedia entry, and simplified by me, a mechanical engineer with a passing interest in relativity and quantum mechanics. That should tell you about how accurate it might be. Which is quite possibly completely made up, but simple enough for me to remember and pull out as a party trick in the comments section. Also also, this entire exercise is assuming space is not expanding, which it is, so reaching the current edge of the observable universe is an impossible proposition in the first place. Still fun to consider.

[@dannypipewrench533]

@@mage3690 Well, that was fun to consider.

[@Kbax3614]

@@dannypipewrench533infinite mass means time slows down infinitely meaning universe ends in 0 time both for stationary object and the traveler.

[@dukeel6860]

As much as I love science and space related videos like these, I have never been so satisfied watching an informative one as this. Awesome! Subscribed

[@BlenderTimer]

Thanks!

[@user-ud6pg7ss5y]

@@BlenderTimer This is just clickbait. There is nothing faster than the speed of light, therefore it's not "EXTREMELY slow".

[@atch4764]

@@user-ud6pg7ss5y just because something is the fastest doesnt mean its not slow, i mean, look at a group of 5 year olds. One of them WILL be faster than the others, but an adult could walk as fast as the kid is running

[@user-ud6pg7ss5y]

@@atch4764 but the speed of light isn’t slow compared to anything. That’s like saying Usain Bolt is slow since it takes him a long time to run 10km or whatever

[@atch4764]

@@user-ud6pg7ss5y thats literally what this is. the video is the speed of light is slow compared to the vastness of the universe

[@RoGamer57]

This channel is so underrated. This video was great and deserves much more, hope you do better! ❤❤❤

[@BlenderTimer]

Thank you so much!

[@AlexTrusk91]

Great video, in all its detail. Just one tinywiney thing: there seem to be shades of black in the background as artifacts. Try to use the same shade there. Brightness difference from 230 to 234 wouldn't be noticable, but from 0 to 4 is a whole other thing. Most screens don't compensate for the fact that brightness is computed linearly so we need to keep it in mind 🤷🏼‍♂️🙈 Anyways, liked and subscribed 🖖👍

[@BlenderTimer]

Yeah. I had an issue with my video software's compression algorithm. I've fixed it in all my new videos though.

[@dominikmilien]

I'm glad to be here before this video blows up. Both of your videos are entertaining and even though I thought it's nothing new for me, there still were some very interesting facts. Your description of the speed of light really puts things into perspective and I think the title will catch a lot of viewers who won't be disappointed as the content quality is great. Definitely a channel worth subscribing!

[@BlenderTimer]

Thank you so much!

[@lloydmills5968]

What a great video! I really hope your channel does well, and I'm looking forward to seeing more of your stuff!

[@BlenderTimer]

Thank you so much!

[@gamefossil8635]

It's quite amazing that how we can learn even more when we are not forced to learn it..

[@stratovani]

Years ago I downloaded Celestia, which lets you travel faster than light. I had a joystick attached to my computer, so travel was easier. It was from using this that I realized just how slow the speed of light really was. It' just two seconds to the Moon, and minutes to Mars or Venus. Anything beyond that takes a long time!

[@igorzherebiatev5751]

Don't forget that you can't reach the speed of light just in seconds. You have to spend days to get the speed of light and the same amount of time and energy to make your ship stop.

[@stratovani]

@@igorzherebiatev5751 Yes, that's true in the real world, but you don't need to worry about that in computer software. Celestia lets you travel many times faster than light so you can reach celestial objects in seconds.

[@Gooburst4771]

do you really expect light to be fast in an infinite world of space that basically gets larger every microsecond? no do u think that the space between venus and earth or mars and earth is 3 miles or smth because ur off ur head ye the speed of light is fast but compare it to an infinite universe that expands every microsecond and that venus and mars are getting further away from us i get why people say its slow but the video is comparing a snail travling neptune to light travling the UNIVERSE like people really think light can travel anything in 2 seconds bruh

[@stratovani]

@@Gooburst4771 sorry, but I don't bother with comments from 5 year olds.

[@V-Logs-about-adventures]

Well since time is relative, if you go near the speed of light you time would move much slower compared to the time of a resting observer (earth). That means you could actually go very far in the universe in you lifetime. The only problem is that for a resting observer millions of years pass while you are flying.

[@toco1318]

Due to special relativity, it will take no time for you to move to any place in the universe going at the speed of light. While it could take millions of years for the outside observers of planet earth. You will be where you want to be in an instant. Pretty weird to imagine that everyone can die in under a second from your own perspective.

[@bxdanny]

But special relativity also makes it clear that you (who have mass) cannot ever travel at the speed of light. You can approach it (if you aren't killed by micrometeorites in the process) but never reach it, so you can never transport yourself anywhere instantly.

[@Kyanzes]

@@bxdanny But you could do 99,999999999999 which is practically enough.

[@edwardmacnab354]

The traveler would also be dead in the sense that a seed is dead , or dormant !

[@LionKimbro]

@@bxdanny That's irrelevant. Putting aside the questions of "how do you survive such an acceleration?" and "how do you get that much fuel", -- if you could reach sufficiently high speeds, proximal enough to the speed of light, you can reduce the amount of subjectively felt time to, say, cross the galaxy. You could cross the entire galaxy in subjective time 10 seconds, barring the fuel & surviving acceleratoin issues. Everyone else will see you streak across the sky at the slow, slow, slow rate of (just nearly) the speed of light, but from your perspective, you'll make the trip in (say) 10 seconds. For you, the length of the galaxy contracted dramatically.

[@slowanddeliberate6893]

That's not true. The travelers wouldn't feel like they arrived instantly to their destination, but, instead, to them it would feel like their environment paused for the duration that they traveled at the speed of light.

[@MasonMC]

It’s worth mentioning that this is also using our time, where a year for us is over 1% of our lives. For the universe, living for a year is the equivalent of about 2.5 seconds of a human living for a year. So I would imagine the universe also thinks the speed of light is pretty fast.

[@Nonamelol.]

Not to mention the Universe will live a very lengthy life meaning that “2.5 seconds” is getting smaller and smaller.

[@pbmworld9933]

Best video ive seen to explain this. Youve just gained a subscriber.

[@BlenderTimer]

Thanks!

[@Salas7]

The speed of light is not slow, is just that the universe is soo big that you can’t really compare. For real, is literally the biggest concept ever, nothing can compare.

[@daybreak1561]

I had an exam and this helped me memorize the electromagnetic spectrum, content like this is amazing, condensed into short video's which are enjoyable and educational

[@BlenderTimer]

Glad it helped!

[@user-fo9io8hx5k]

If you take a source that is 1 quintillion times faster than light and compare it to the universe. It will still be slow. That doesn't make light slow. You need to compare it with other sources to tell if it is actually slow Edit: you basically need to compare light to a source with the same distance. Comparing light with universe and snail with Neptune doesn't make light slow

[@shrimpjar2]

I like this video a lot. Even though it takes what us humans would call a while, only 80,000 years to cross the galaxy is not very much. Also, that's only about 800 years on earth since space lags about 0.01 seconds every year. Sure, to the astronauts it would feel like forever, but they would still age only 800 years. So, I would say that it's extremely fast considering it can travel about a billion miles in 1 and 1/3 of a hour.

[@briansheridan9975]

The snail comparison was mind boggling.

[@williamsteveling8321]

Yes, the speed of light is slow on these scales. And it gets a bit more odd when you consider that it's not REALLY the speed of light, but the speed of causality. And this has implications. E=mc^2 was mainly intended to indicate the mass equivalence of light/energy in producing gravity, but there's a knock-on effect here... Imagine you increased the speed of light/causality. On the one hand, the given gravitational impact of any given unit of energy would decrease, but the energy equivalence the other way, that of matter to energy, would greatly increase. In the era around the Big Bang, matter would have been far less likely to form (and antimatter would have a bigger energy output when annihilating with matter). This would also affect how quickly effects from other parts of the universe reached us... Small changes would likely be negligible, but on balance it would very much alter our reality.

[@oddball119]

•_• I think I am a little too dumb for this part of the internet.

[@crusadercatwoman02]

Casuality? More like the Speed of Light is dependent upon the Permittivity and the Permeability of of Free Space (Vaccum). *C=1/√(ε0μ0)* ε0 = 8.8541878128(13)×10^−12 F⋅m^−1 µ0 = 4π × 10^-7 H⋅m^−1 Therefore, C = 299,792,458 m⋅s^−1 As for why the Permittivity and Permeability are such constants? It is the inherent property of the Spacetime Fabric itself which has not yet been discovered. The Zero-Point Energy, the Quantum Foam and the Casimir Effect are perfect topics to study more about this in detail.

[@destiny6080]

What language are yall speaking, I'm so confused

[@oddball119]

@@destiny6080 science

[@MGSLurmey]

@@oddball119 Extremely complex science. Literally astrophysics and quantum mechanics.

[@damqnatanasov8273]

don't stop making videos, they are banging dude. well done

[@Mr.Robert1]

Somehow I don't think this gentleman is going to appreciate being called dude

[@jonathanmain59]

Watching this video made me question the extent that films and tv (mostly star wars and star trek) make it seem totally plausible that in a distant future, we could have the ability to travel throughout the universe. Most importantly they make it seem practical, that it would serve some benefit to humanity or expose unseen alien life and ecosystems. Even at lightspeed, it would take a lifetime to travel between galaxies.

[@noahtornlund9642]

If you were traveling at the speed of light it would feel instantaneous for you, but for your surroundings it would take the time it actually takes light to take you there

[@cjp1599]

With time dilation, I thought once you hit the speed of light you no longer age-so time stops. which means going the speed of light would mean once you reach light speed, distances no longer matters, you can be anywhere in what seems less than a second. but of course reaching the speed of light has its own roadblocks.

[@supercyclone8342]

From my understanding, it'll be instant for you, but everyone else will have aged the appropriate amount. Basically, you could take a trip to a distant star, but you'll only be able to tell your great grandchildren about it...

[@MichaelHarto]

@@supercyclone8342 we'll just put everyone in the ship then 😁

[@wlockuz4467]

In less than a second is over stating it, it would be literally instantaneous because you wouldn't experience time. You can be in every place at all the time, but its funny to say "all the time" because time doesn't even exist for your anymore. Its so mind boggling that its impossible to imagine what it would be like.

[@OscarASevilla]

You'd get there "instantly" as relative to your view and perspective of time/life. But, relative to everyone else, they will still experience everything normally to themselves, thus, for them, you would get there in the right amount of time according to math and calculations.

[@cjp1599]

@@wlockuz4467 that's why it's likely impossible, but incredible to imagine...

[@MandolinSashaank]

Wait. I literally thought this channel had a million subs. The video was so professional. This channel is gonna blow up one day mark my words!

[@Mr.Robert1]

That will only happen when people realize that the Earth is not flat. We don't have people living in the core of the Earth. We don't live amongst shapeshifters, reptilians. They believe we've never landed on the moon. The mentality of the average person that's watching KZbin is amazing not only are they lacking in education they are also lacking Common Sense which frightens me.

[@cesarjimenezsalazar9322]

This is crazy, I really hope we're missing something and in the long future we can figure out a way to travel much faster

[@assassinunknown6664]

Humanity would be extinct before we needed faster than light technology

[@brolysujay]

What a well made and narrated video.

[@BlenderTimer]

Thank you!

[@destroyercs5720]

3:31 we are compelled to watch at 0.25x speed

[@BlenderTimer]

🤣

[@yessiryt]

It was four frames I think on .25x speed

[@TheWorldsLargestOven]

I saw four frames

[@gmacalinao7068]

Yep

[@rodholseth6354]

The unfathomable distances in space. Makes us seem so small, so insignificant. It's marvelous!

[@BxPanda7]

I feel the exact opposite, all these billions of miles of nothing of interest ever happening, and yet on this small dot we call earth there's billions of things happening everyday. So it makes more sense to me that these billions of miles are completely insignificant, meanwhile all the things happening on earth are by far the most significant things happening in a radius of billions of miles. If that doesn't make you feel special then I don't know what will 😁

[@renjiaow3742]

That is utterly mind blowing that even at 1 billion times the speed of light it's still slow.

[@RyneMcKinney]

I knew I wasn't going crazy when I saw Turbo in the thumbnail. Childhood movie

[@spicymeatballs2thespicening]

I forgot that was a thing until u reminded me lol

[@aycoded7840]

0:22 Oh wow, that is _such a good way_ of putting it.

[@seanhopkins6179]

One important feature. It may take many years, but from the perspective of the people traveling, it’s an instant. So for you traveling around the universe would happen instantly

[@SimonsAstronomy]

Bro is the most underrated chanell in the whole observable universe

[@BlenderTimer]

😂 Thanks!

[@chiragsaha3920]

The snail in the thumbnail is from some another planet. It moves faster than light

[@petebut8]

The snail completing Neptune’s orbit around the Sun 7 times in the same time “light” would take to orbit the Universe once are the visual comparisons I just love. And I feel I can appreciate most of such comparisons. But to be honest -for some reason this one blows my mind - considering that no measured distance or measured amount of time was needed to make the point clear

[@cheeseslice6264]

he actually said 3000 times, which makes the universe much much much larger

[@petebut8]

@@cheeseslice6264 Opps! My bad. Sometimes I say 7 when I mean 3,000!

[@Nguyenthithunguyet2005]

That snail is pretty fast, it can run 7.5 times around the world in one second

[@StephanBuchin]

Well done 🙂. People need these kinds of representations to get a better sense of how large is the universe.

[@juha2031]

After seeing this video i don't ubderstand how this benefits my life except for the entertaining part.

[@mastermonster5974]

This channel needs more subscribers

[@nostalgicman2023]

light is fast for us, but for the Universe it is extremely slow because it is probably infinite, so no speed would be fast enough to cross the universe since it has no end.

[@williamsorenson1525]

You can't just argue that the speed of light is slow, when you take into account relativistic physics, which makes the observed speed of light, using a light ray as a frame of reference, infinite (obtained from the Lorentz transformation). Also, light can't even travel around the universe. The universe is traveling faster than the speed of light. Lastly, it doesn't make sense to say light is slow, without comparing it to anything. But we can't just say the speed of light is slow with respect to the size of the universe. The universe is way bigger than people think. Like, astronomically bigger (im so punny lol).Nice animations though!

[@XBGamerX20]

true. I mean, using the speed of light in and around our solar system is a blessing but using the speed of light to travel into distant galaxies and stars then its gonna be a disappointment.

[@ultraninja5783]

speed of light isnt slow, its just that out time scales like years and millennia are extremely short. 1000 years compared to universe feels about the same as 1.25 minutes to a human with a life expectancy of 75 years.

[@MGSLurmey]

We all know that calling C slow is just a way to highlight the sheer size of the Universe.

[@justprod3049]

Its slow compared to the scale of the universe

[@ultraninja5783]

@@justprod3049 literally everything is slow if you make the time measurement small enough. it's like calling a 500mph jet slow people it cant fly the diameter of the earth in half a millisecond

[@Marc816]

The speed of light is actually abysmally too slow for interstellar flight or communication. You may just as well walk. But the aliens who come here from other solar systems know how to get across the light years in hours. I so wish that they'd dish us about that.

[@omnomnom5359]

Haha dish, nice one

[@rarebeeph1783]

if we could approach the speed of light, and do so without our ship tearing itself apart on the interstellar medium, we could actually get just about anywhere light could in a single lifetime. the problem is that, if we travel what someone on earth measures as 50000 light years, someone on earth will also measure us as taking 50000 years. even though at our speed (99.999whatever% c) the length may have contracted to, say, 1/12 of a light year, and as such we got there in a time we measure to be 1 month, the only people left to even try to communicate with would be others who made similar relativistic speed journeys, and they would be so far away as to only be contactable while they are currently taking similarly fast and long distance trips, possibly depending on direction as well.

[@enoughofyourkoicarp]

I've never thought about it that way before, 10/10 for presentation.

[@Donnirononon]

That is what i thought abut some days ago after reading the "Remembrance of Earth's Past", it is actually crazy that we see the sun 8 minutes in the past when it is actually right next to us

[@valinorean4816]

Wait, but a million years is very little, so it all checks out!

[@kingkaizoku85]

7:36 or the snail is just really fast 🤡

[@TheWorldsLargestOven]

You could've gotten a comment from the creator if you didn't put a clown emoji in your comment.

[@kingkaizoku85]

@@TheWorldsLargestOven Huh cool. A comment from the creator. What a prime example of humen defining what is and isnt special. Some human interacts with you? Nothing suprising. But wow if its the creator of a youtube video? Guess youre right. It all totally matters and the state of "creator" doesnt change on every channel.

[@TheWorldsLargestOven]

@@kingkaizoku85 you don't need to cry about it

[@kingkaizoku85]

@@TheWorldsLargestOven The fact you made a follow up comment to it meant you really cared about it which genuinely suprises me. I thought you were just acting dumb but looks like you werent acting.

[@TheWorldsLargestOven]

@@kingkaizoku85 The fact that you got mad at me because i just stated a comment got more attention than you for being more mature at making a comment and you have the audacity to make another comment talking about how much of a cry baby you are is embarrassing.

[@igorzherebiatev5751]

Nice snail 🐌 and whole explanation. Just perfect and simple

[@BlenderTimer]

Thanks!

[@amaas211]

2:22 Fun fact: When we see an object as a color, like a yellow pencil, The color we see is just the part of the visible light spectrum that object reflects. The colors an object doesn't reflect are absorbed. This is why black is considered the hottest color, it absorbs all light, while reflective material is cold on the non-reflecting side.

[@amaas211]

It's a scale issue. We haven't conquered terraforming our own, livable planet and some billionaire wants to terraform dead Mars.

[@snowkracker]

Seems more like a video about how vast space is opposed to the speed of light.

[@BlenderTimer]

It's kinda a mixture of both.

[@1953bassman]

When you consider that the Pioneer probes have recently exited the solar system after some 40 plus years, and it takes its signals about 20 hours to reach us, that means it got less than 20 light-hours away in that time! We're a long way from getting anywhere near lightspeed. Yes, lightspeed is a relatively slow speed to travel, considering the distances.

[@mal2ksc]

@@Hudoi-1 Sleeper ships (everyone who can be in suspended animation for the trip, is) should work too, and have the rather significant advantage that the people who end the trip are the same ones that started it, so the chances of the mission objectives being completely ignored (by a generation that didn't agree to them) are greatly reduced.

[@Blueknight1960]

@@mal2ksc It doesn't matter, humans will never travel that far. At current tech, it would take 37,200 years to travel 1 light year. According to a video I watched, the closet earth like planet that "may" support life is 40 light years away, travel time at current tech is about 1,488,000 years. Light doesn't seem so slow after all.

[@lepperkin]

@@Hudoi-1 We don't need sleeper ships, according to funky laws of time and physics, for those inside the ship, it would appear to happen instantly once we reach the speed of light.

[@lepperkin]

@@mal2ksc oops, I meant to reply to you, not the other guy

[@mal2ksc]

@@lepperkin Except when you go that fast, you slam into the interstellar medium that fast. It may not be possible to exceed a few percent of light speed and keep everyone alive, but if it's OK to take a thousand years to get there, and the support ships can go 20% light speed because they can survive the radiation hit and set up in front of you... then it might be practical. The extra couple hundred years may even be critical to the plan, to let the advance AI crew set up a habitation for the humans. Also, not to put too blunt a point on it... they don't ALL need to survive.

[@LieseFury]

As someone who already understands a lot of this it was easy to follow, but the bit about the "primary colors of light" doesn't really relate to the rest of the video, and can be confusing to anyone who isn't as familiar. There's nothing inherently special about red, green, and blue; those are just the 3 wavelengths the cells in human eyes evolved to receive.

[@leucurus5057]

A thing you forget is time dilation, for you the trip would be basically instant while the rest of the universe behaves normally

[@m.j.r.technologyreveiws1075]

Except for the part where you displayed light as billions of tiny particles called photons, it was pretty good. Light (EMR) is purely outwardly radiant energy from a magnetic source of changing polar direction. That source can range from a rotating magnet to an orbiting electron. The rotation causes a magnetic polarity change perceived as waves of various frequencies. 520nm (green) light means that in the time that EMR radiates out from the source a distance of 520nm, the rotating source has flipped magnetic polar direction from North to South and back to North (one cycle).

[@BlenderTimer]

Yeah, it took me awhile to figure out how to best visualize it. I finally decided to go with particles as I think it's easier to understand that way. According to NASA "All light has both particle-like and wave-like properties." So we're both right. science.nasa.gov/ems/02_anatomy

[@Mr.Robert1]

Let's not nitpick now I understand where you coming from however like I posted in 10 different places already I get into conversation with KZbinrs that believe we've never been to the Moon the Earth is flat we live amongst the reptilians they live in the world of conspiracies it just boggles my mind

[@OscarASevilla]

Technically, as of 2022, light is considered both particle and wave.. sooo..

[@m.j.r.technologyreveiws1075]

@@OscarASevilla Yes but the definition of “particle” in relation to a photon of EMR means the least posible amount, portion or quantity of quantum energy.

[@OscarASevilla]

@@m.j.r.technologyreveiws1075 fair enough

[@Xhopp3r]

Very cool. I've done many thought exercises trying to figure out how long it would take to travel from earth to another galaxy. This was a very well done video. It puts things into perspective, and it can be used as a very good argument for our need to figure out warp drives and worm hole traveling.

[@Random_user_8472]

We are actually travelling to another galaxy: Andromeda :)

[@Ryanbros]

@@Random_user_8472 no we aren't unless you count the voyager spacecraft

[@Random_user_8472]

@@Ryanbros Yes we are, in 4 billion years from now our galaxy will collide with Andromeda :)

[@Ryanbros]

@@Random_user_8472 bro...

[@Random_user_8472]

@@Ryanbros Yes?

[@Reaper0nYT]

for most of the time i had no idea what you were talking about but it was interesting

[@jordythecat7181]

>be me >fastest thing in the universe >literally nothing can go faster than me >trying to go faster breaks time or something *>takes four years to reach the nearest star*

[@BlenderTimer]

😂

[@godnyx117]

Great video! Thank you so much for putting this all together!

[@BlenderTimer]

Thanks! Glad you enjoyed it!

[@Jan12700]

But what about time dilation? While flying at the speed of light it may appear to outsiders as taking the time you quoted. However, in the spaceship itself time passes much more slowly. The closer you get to the speed of light, the greater this effect. 5:00 To an outsider yes, the journey to Proxima Centauri takes a little over 4 years and 3 months, but inside the spacecraft it's just 22 days.

[@literallynothinghere9089]

Pls can anyone link me a video of how exactly time is different for people at such speeds. Like I know about the theory hut don't understand it. Isn't time an abstract concept we made in our brains

[@Jan12700]

@@literallynothinghere9089 "We all move at the Speed of Light" and "Special Relativity" from ScienceClic English

[@garry1214]

Great tutorial, thanks

[@harivenkatesh3816]

At light speed, the time inside the spaceship stops. So technically speaking if you are inside the spaceship you would reach the edge of the universe instantly. Yes INSTANTLY. The duration mentioned in this video is applicable only for stationary observer.

[@steffenharris796]

Very informative! You got my like and sub! Now I really can understand why we haven't been visited by aliens. They are simply too far! In my opinion the first extraterrestrial contact will be a super intelligent A.I. I'm sure they will also be the ones who develop the form of transportation to make those distances. Looking forward for more content! 🍻

[@BlenderTimer]

Thanks for the like and sub!

[@davidshareefChTPhD]

I have never thought of it in this fashion before this is mind-blowing! And it makes me wonder if aliens have Wormhole technology or they come from right here on planet Earth!

[@Mr.Robert1]

Think dimensions and multiverses the amount of knowledge is incredible the amount of stupidity is most likely more

[@Kragatar]

It is frustrating that, even at speeds that are beyond impossible to achieve, exploring our one little galaxy among millions of them is still beyond impossible.

[@FizzleFX]

7:44 or C) that's one quick snail 🐌

[@BlenderTimer]

That's probably it LOL!

[@SBTRIS]

I heard the developers are working on light 2.0. Apparently they're utilising another 16 dimensions to find shorter paths across higher dimensional space, reducing time/ increasing speed in our perceived 3+1 dimensions. Just need to install the beta update.

[@skillethead6968]

There you go.

[@MelodicTurtleMetal]

There's a Chinese knockoff you can use right now - they advertise 2.0 speeds but it's actually only 80% as fast. But it's cheaper!

[@bigforestband]

You told us about light but forgot to mention the literal most important thing when understanding its speed: Light literally travels at the speed limit allowed by the universe. It's so fast that it itself probably doesn't experience time. It is fast, despite the size of the universe. Comparing the size of the universe to something that literally travels as fast as is possible doesn't make sense. Just because you increase distance between two objects doesn't make them somehow slow; it just makes them far apart. Your math may not be wrong, but your conclusions fail to understand what the speed of light actually is. If the universe allowed light to move faster, it would. The laws of the universe do not allow this, therefore it cannot be any faster as it is literally the fastest anything can possibly move. Nothing can be faster. I'm flabbergasted. The information provided does not equal the conclusion you came up with. The only thing you go right is that the universe is extremely large. But electromagnetic radiation (light), no matter how big the universe is, is the fastest possible thing and would be even faster if the universe would let it.

[@potatoesandducks958]

I mean, fast is relative, so...

[@Gymnasiar]

Its a thought experiment to give us a good understanding just how big the universe is. Nothing else

[@KratosAurionPlays]

I would never say light is slow but dang the universe be really large.

[@HansenSebastian]

And it continues expanding and expanding each second by only one millimeter, and it still won't stop after reaching 100 billion light years across from one point to another. In other words, even if light would take 100 billion years to get across the observable universe, the universe itself would still continue expanding until God knows when.

[@Jaggerbush]

Bumping up the scale like that really takes away from how slow the SOL really is.

[@TitoTheThird]

0:35 "Light was the first thing created in the Universe." Quite incorrect. Light is just one aspect of the "electroweak force" which in turn may be unified with the "strong force". The union of these 3 forces would be a better contender as "one of the first things in the Universe".

[@Blox117]

the first thing created in the universe was the universe

[@TitoTheThird]

@@Selendeki And whose god do you refer to? The gods of the ancient Greeks? Or the Egyptian Ra? Or the god of the Hebrews? Or Allah? Or the Hindu pantheon? Etc, etc. Perhaps it is you who is not familiar with the GLOBAL literature on the subject.

[@NotChinmayi]

​@@TitoTheThirdreferring to God of the Israelites, obviously

[@callmejest5239]

God said let there be light and so force wasn't the first thing made

[@SUNKINGME]

This was an interesting video. However you didn't mention that you were speaking about what WE see when observing light. According to Einstein's Special Relativity Theory were we riding a light beam we would experience NO TIME and NO SPACE!!

[@BlenderTimer]

Pretty sure I said "we've only been looking at what happens on our own tiny planet".

[@BrekekeReal]

POV: the speed of light isn't slow, it is just us not living for long enough

[@therealchayd]

Waiting for a Spaceballs reference... "Prepare ship for light speed!" "No, light speed is too slow" "Light speed too slow??" "Yes, we're going to have to go right to.......ludicrous speed!"

[@minecraftadventure7350]

Am i the only one or, if you stare at the light bulb on 1:09 it will actually look like it's shrinking? it's an optical illusion

[@reileymilos1328]

I think that it's actually a part of the video because when I pause it doesn't shrink anymore even if I look away and then look back

[@k27Lmoa]

@@reileymilos1328it’s just the light “particles” going away from the lightbulb that is looks like it’s shrinking

[@nolesy34]

@4:25 were going to fast forward even more! KZbin... breaks

[@BlenderTimer]

LOL🤣

[@Hamodi-go1sl]

I love your videos hope you reach 100k subscribers

[@BlenderTimer]

Thank you!

[@Hamodi-go1sl]

@@BlenderTimer your welcome

[@phoenixfires1877]

this guy might just be the smartest man in the world right now, and his editing is amazing better than some people with 1m subs

[@BlenderTimer]

Ok, ok, maybe not.😂 But thank you!