Visualizing the Speed of Light and Speed of Sound

In this animation we will compare the speed of light (the images of objects that reach our eyes) to the speed of sound. We will also look at some everyday examples of where the discrepancy between these two speeds are visible. I hope this video gives you a great understanding of the two speeds. Thanks for watching and please consider subscribing for more!!
Follow me on instagram: / animations_xplaned
Note:
Speed of sound is based on observations in dry air at 20°C
Speed of light is based on observations in vacuum
Distances between earth, sun and the moon vary throughout the year.
The size and distance of the planets are to scale
Edit: Speed of sound would take ~18,678 minutes to get from earth to the moon. Around 13 days.

[@mateny.6770]

Good job on the video. But I'm surprised, that there is no mention of the thunderstorm. I think that's the situation most people experiense the difference in the speed of light and sound.

[@thestudentofficial5483]

Yes, my teacher taught me this by telling us how to calculate distance to the lightning strike

[@davidflavin]

Very good examples for a young USA audience I'm assuming.

[@sicfxmusic]

That's the fact most people know since pre-school including yourself so why repeat the obvious

[@andregustavo2086]

@@sicfxmusic I thought the same

[@tomn1568]

I thought of fireworks

[@luois]

In Paris actually sound is faster than light, you will hear the horn of the car behind you before the light turns green

[@habu179]

Very good.....

[@nachote141]

Also in Buenos Aires!

[@railworksamerica]

Also in NYC

[@Jibrail5726]

Not really. Speed of light is constant whereever you are. Thats just people being impatient and honking before it turns green

[@ryan-eq8qd]

@@Jibrail5726the joke went over your head

[@paull2937]

1:14 Remember, the speed of sound is not always the same, it varies greatly with temperature and slightly with humidity and air pressure. On a chilly winter morning, which is about 14°F (-10°C), sound will only travel about 325 meters per second, +/- 1 meter per second depending on other factors. But on a hot summer day, which is about 95°F (35°C), sound will travel about 352 meters per second, +/- 2 meters per second depending on other factors.

[@mattd6085]

The speed of light also changes depending on factors

[@FFuriousOreo]

nice ctrl v dud

[@pyramixmaster7905]

@@mattd6085 not noticeable to humans though

[@mattd6085]

@@Lhaj3 the speed of light varies by the medium it travels through. How it does that is irrelevant

[@theauditor456]

@@mattd6085 no the speed of light is constant. The velocity of light may vary depending on density of medium.

[@CarlSolovox]

The best example I've heard: If you were sitting in the outfield upper-deck stands at a baseball stadium, and you were also watching the same game's live telecast on a portable television, you would hear the crack of the bat on the television before you heard it from where you were sitting. Meaning the broadcast signal left the stadium, got processed and converted into a signal that was then beamed to an orbiting satellite...then back down to a transmitting tower, and then to the screen and speaker in your tv...all before the sound from the bat reached you from five hundred feet.

[@westnblu]

also when people clap on the far side of the stadium u see the clapping b4 u hear the sound.

[@MarcillaSmith]

Also, even though it's called a wave, when it happens in the stadium, it's not a tidal interaction with the moon. I love science

[@ddebenedictis]

Great example and description. You took a normal example like comparing the sound and light traveling from the bat to your seat...and juiced it up on steroids. Appropriate for a baseball analogy 😂

[@macicoinc9363]

I hate to be a dick, but there is typically a lot of delay in the processing and converting stage of the broadcast which would cause a few seconds of delay. However, if you ignore them and just go based on the distance light takes to get to your tv than your example still holds.

[@anasabdul5119]

Also why optical wires use the concept of light to transmit signals.

[@rollinrobo]

One of my favourite examples is when you go to watch a live band in a large venue, and you're sitting in one of the upper levels of the venue, and you look down at the people jumping in the mosh pit. There's always a noticeable 'wave' effect as the people are jumping and the ones near the stage hear the sound before the people further away from the stage.

[@TheRealGuywithoutaMustache]

Just think how fast the speed of light is and how far light can travel continuously for a year. Now imagine traveling at the speed of light for decades and we’d barely be able to explore a portion of our galaxy. It’s just mind blowing how incomprehensibly large this universe is.

[@some-jm4go]

eyy

[@msou8400]

Wenoma

[@womp47]

even just from the moon and back the speed of light is slow. just in our our solar system it becomes unbearably slow. its sad just how slow the speed limit of the universe really is

[@Untilitpases]

*for decades* time dilation enters into the scene

[@Tikvinka]

But Earth is flat, and stars are painted on the sky dome

[@turmat01]

I learnt this as a kid when I saw soccer players play in the park from a distance. Sometimes when they kicked really hard you could hear the thump from far away. I could see the delay between the visible kick and the thump. Kindof like an apple falling on your head moment.

[@chicobicalho5621]

For me lightning and thunder are the perfect examples to illustrate this point. One funny aspect of this difference is related to sheppards and the dogs that obey their command by hearing different kinds of whistles. When the distance becomes really great, the sheppards have to keep in mind that the dogs will hear the sound of the whistling with a delay, so the human has to predict the movement of the sheep herd ahead of time, keeping in mind the sound of the whistle will be received by the dog with a delay of two or more seconds, and this involves a lot of knowlege, experience, and technique beyond the traditional herding!

[@PlayboyKeon]

not every one experiences lightning. more people in the world experience a plane flying above them at great heights, so its an easier analogy for the majority to relate and understand. not thunderstorms where most don’t see such a thing.

[@SebastianRodriguez-gi8iq]

@@PlayboyKeon Is this true where u live? Is it that rare to watch a thunder? In my country i wouldn’t be exaggerating if i stated that everyone has seen a thunder. They are extremely common.

[@AveryB.0]

@@PlayboyKeon I would say much more people in the world experience lighting than a plane flying over there heads lol. You gotta think of all the rual areas of the world with no nearby airports.

[@hxhdfjifzirstc894]

I remember when I was a kid, I thought lightning and thunder were two different things... that both happened during storms. After a while, you figure it out.

[@AllEy3s0nMe]

@@PlayboyKeon Only people that don't experience lightning are blind people.

[@lemmiix]

2:51 this feels so real. Shows how important sound design is for movies/games/etc.

[@LnmHive]

I feel kinda disappointed when a movie shows an explosion from far away but the sound comes at the same time

[@OblivionFalls]

@@LnmHive Chernobyl did a good job getting this right

[@Coyote0874]

@@OblivionFalls Not great, not terrible

[@LnmHive]

@@OblivionFalls Wow, OblivionFall? I wasn't expecting to see you here, I know of your work with DAGames

[@Asto508]

This feels like buggy audio latency actually.

[@FirstMomentsOf]

Props to the camera man who went all the way from earth to the sun and back.

[@Cr3reeper]

@@juan2049 this is internet it doesnt fucking matter, try something raw like "the bass came harder than my grandma falling on the stairs" you can complaint that

[@tuxtitan780]

@@juan2049 your reply isn't original. Come up with new material

[@259]

@@tuxtitan780 Your reply to the reply isn't original. Come up with new material

[@CadillacDriver]

@@Cr3reeper "you can complaint that". Yeah na, with your obviously low I.Q., you have no place telling someone what they can say or not.

[@thing.]

@@259 Your reply to the reply to the reply isn't original. Come up with new material

[@davemitchell116]

What's really weird is to stand on a golf course green and look back at that hole's tee box (c. 100 meters away) and hear the sound of the club hitting the ball AFTER the player has completed his swing. I've heard this many times.

[@Jeesus353]

I remember as a kid watching people across a sizeable field beat their rugs and you would watch them swing, hit the rug and get ready for another swing before the initial sound hit you.

[@michaelschramm1064]

One can just be in bleachers at a baseball stadium as I have as a kid, witnessing a full swing of the bat…and the delayed “crack”.

[@shawncon]

@@Jeesus353 one intuitive kid

[@ruthlessrubberducky5729]

Props to you actually animating a bullet correctly (separates from casing) and specifying caliber (massive velocity differences) of such a bullet. Can't tell you how many people mess this up while trying to look smart and throw out numbers. Credibility went way up for me to see you do the actual research and math.

[@feeberizer]

I live close to railroad tracks. I love hearing the Doppler Shift at night because the air is usually quieter and denser, and the effect is so much more distinct. Having the floor in my apartment jiggle like Jell-O because it's a silt river valley is also fun.

[@ben_mac8670]

Sounds like my cousin Vinny lol do you have a revolver too.

[@vomitedtoe7158]

@@ben_mac8670 ur weird

[@Bankable2790]

My family has some property adjoining a creek, along which we built a cabin on stilts. It’s probably 1000 feet from an interstate bridge crossing the creek, and when trucks hit the bridge you can feel it shake the whole cabin. The soil is like jello. This is a very large creek too, the bridge is probably over 100 feet long.

[@haydenlangei7905]

I love how this video isn’t packed with information, it’s a super easy concept that you could’ve explained in 1 minute but instead made a very interesting and comprehensive animation, great job

[@mattd5147]

The most mind-blowing thing to me is that in cosmic terms, even light is slow. That's why we must go right to LUDICROUS SPEED if we want to to actually explore the universe.

[@davidhawthorne652]

HAHA going plaid.

[@BRKS1999]

Nothing can travel faster than the speed of light so get that idea out your head 😂

[@mattd5147]

@BRKS1999 Thanks Mr. Scientist!! You are very smart.

[@Ysae791]

Light isn't slow because time is relative. For a photon moving at light speed nor time nor space exist. A photon reaches any point of the universe within the same instant it is created. So if we were to move close to light speed we could cross the universe, in let's say 2 seconds while for people staying on earth countless billions of years would have passed.

[@rjmakesanimations]

Well explained visually & great animation! 👍

[@PanDiaxik]

Even though light going around the earth 7,5 times a second seems fast, it is slow enough to cause noticeable delay in communication across the earth. It is impossible to get ping lower than about 140 ms between places in the opposite sides of the earth and in practise it's even more because light in fiber travels slower than in vacuum and you don't have fibers in straight line between every two points on the earth.

[@NGC1433]

Also the light is not travelling straight along the fiber, it is bouncing off the walls in a zig-zag or a spiral. There is also the helix factor - fibers inside the cable are wound around each other similar to the rope but not as steeply of course.

[@sbgaming7316]

It's also impossible to get less than 140 ping when playing on servers in the same country as you

[@Shade_Tree_Mechanic]

Don't forget about interconnects. They greatly decrease throughput

[@bzoned9808]

you can, by adjusting the ping programe to divide whatever ping it shows by 140.

[@Nosirt]

Light cannot travel at any speed other than light speed. Light in fiber don’t travel slower, they just take longer time because their distance is longer. Light in vacuum will travel straight while light in fiber will be traveling by bouncing in the fiber walls.

[@timpie9346]

A real-life example that fascinated me as a child, and whereupon my father explained to me the difference between the speed of sound and the speed of light: I was sitting outside our front door watching some kids playing soccer on the playground across the street when I noticed that the impact of the ball on the grass and the sound of it were out of sync. I remember to this day - almost 30 years later my father's explanation. A true childhood moment.

[@silver6380]

I had an interesting experience with the speed of light and sound at the age of 12 (or maybe 13 - it would have been one of two possible years). The casino my dad worked at was putting on a huge fireworks show, and he was able to get us in to see it, but we were watching from indoors, in a building very far away. I don't know exactly how long the delay was (should have counted!) but I remember being struck by just how long it took the sound to reach us after seeing the fireworks. It was at least three or four seconds, probably more. Of course I knew even then that light was much faster than sound, but it was very memorable to experience it in such a dramatic and "in-your-face" way.

[@Bendigo1]

I had a simmilar experience by watching a man chopping wood at a camp ground. I would see him hit the wood then a second or so later I would hear the chop. It was too much for my 5 year old mind to comprehend.

[@Timbo360]

That’s such a cool experience/introduction to that concept! When you see lightning, the amount of seconds determines how many miles(idk about the practice in metric) away it is. Only until a few years ago was I at home when I saw a massive bright flash of lightning, so I began to count. Before i could barely even get to HALF a second, I heard the thunder. Told my friend that it probably struck a few streets down from us. We went to check once the storm cleared and lightning had struck a tree a few streets over.

[@myofficegoes65]

@@Timbo360 It takes sound about five seconds to go one mile

[@Timbo360]

@@myofficegoes65 thanks, I forgot what the practice was

[@brunosavastano1851]

you don’t see fireworks too often do ya?

[@jorgejoaquinpuentenovell3183]

The comparison between sound through the Golden Gate and light travelling between moon and Earth really makes you grasp the difference between velocities... All you'll ever need

[@charlesash8053]

I subscribed to this channel for 2 reasons: 1) Your animations and explanations are clear and concise. 2) You use metric units in all your measurements, and you don't cause the rest of the world to want to gouge out their eyeballs from sheer frustration by using miles, yards, feet and other incomprehensible primitive imperial gobbledygook. Thank you for moving science forward.

[@animationsxplaned8835]

Hahaha yes, I’m Canadian so it’s just more natural for me! Thanks for the very kind comment!

[@melancholiac]

You ignore the simple fact that many of us Brits were educated in the imperial system and on road signs throughout Britain distances are still shown in miles.

[@Φωτό-ρ7π]

That's cuz not enough money to change all the signs and anything in the administration. A mars Rover nasa failed, way to go with the rover maker miscomm using imperial

[@ShwappaJ]

Your second reason makes you sound like a jerk tbh

[@pedrofernandes4050]

Great job! I'm really surprised. This illustrates the difference between knowing and understanding. Because you understand the concepts, you are comfortable "playing" with the elements to show the information through different aspects. I was aware that some 9 mm bullets travel the speed of sound, and that light takes about 8 minutes to travel between the sun and back, but putting all of those in one place to compare 2 completely different speeds is impressive. When Richard Feynman said "Explain to me like I'm a 5-year-old", I think this is what he meant. Plus you used everyday elements like watching a plane or basketball from a distance. I wish you were my teacher growing up.

[@animationsxplaned8835]

Thank you! Its interesting you say that! I heard that quote when I started my channel and I only begin to write my script when I'm that familiar with the science! Its truly a clear indication of a deep understanding of the material and I'm very glad I was able to portray that to my viewers! Thanks for watching!

[@acer-star]

The background music is a great choice. Perfect animation documentary

[@DJandBiskit]

This video is pretty dope and its a shame there is only 5.5k views dude. Well done, and I'm sorry. Take a like and a sub as condolences.

[@glokdreamz]

Its has over 300k now..one day after you say this, crazy

[@dasarus]

@@glokdreamz 644k :D

[@V0ID_beats]

what the hell it has 736k now🤔

[@DJandBiskit]

I guess a single like/comment on a really old video bumps its relevance. Glad I could help!

[@youtubzer]

As a visual learner, until now I was never actually able to fully appreciate the speed of light, thank you!

[@rasmodeus1]

Back in the days of broadcast TV before the usage of satellites, a live broadcast of a singer would be heard by people in front of the TV before people in the back of the theater would hear it.

[@lookoutforchris]

No such thing.

[@Wmann]

@@lookoutforchris ?

[@vitesse_arnhem]

@@lookoutforchris Communist-sympathizing unionized public school teachers have brainwashed the entire population. Everyone wins a trophy. Impeach the bums!

[@anonymousbanana204]

@@Wmann kzbin.info/www/bejne/qJnKqHyed5prhqM

[@lazedimovski1342]

This is the first Chanel I instantly sign to after finish watching the video. Great job!

[@buick1955]

Nice video. One of the best examples are fireworks . You see flash and then hear the sound .

[@markhunter3263]

One important difference though, is that the speed of sound is different depending on what it’s traveling through. It’s faster through water than through air, for example. On the other hand, the speed of light is a universal constant.

[@estranged12]

not anymore.

[@se-kmg355]

The speed of light is 299 792 458 metres per second in vacuum. You will get a different speeds depending on what medium it passes through.

[@mattd6085]

Swing and a miss there bud

[@tashfeenj8259]

Light moves slower in water too.

[@invisiblekid7374]

I remember my first time experiencing the delay in the speed of sound when I was a little kid. There was a guy using a metal shovel to scoop up crumbled up concrete and gravel. I was far enough away to visibly see the shovel hit the ground before I heard it, and I remember thinking wtf? Blew my little mind!

[@CadillacDriver]

No it didn't.

[@user-dh8oi2mk4f]

@@CadillacDriver ??

[@CadillacDriver]

@@user-dh8oi2mk4f "it blew my little mind". Yeah na, no little kid thinks that way about delayed sound.

[@AlwaysOnForever]

@@CadillacDriver maybe just you

[@CadillacDriver]

@@AlwaysOnForever You are gullible.

[@tristanmoller9498]

Dude it’s like the music gripped me and made me want to discover what you were going to say.

[@ujwal4750]

This is an excellent animation man

[@animationsxplaned8835]

Thanks a lot! Thanks for watching!

[@quebeh]

Underrated channel. Good effort, good explanation, good knowledge. Keep it up.

[@davidhibberd]

So we can clearly notice that a plane has moved by the time we hear it, but I wonder how far it has moved by the time we see it. So I work it out: Say a plane flies overhead 10000 metres up in the sky, travelling at 250m/s, and using a speed of sound of 330m/s, so it takes the sound 10000m / 330m/s = 30 seconds to reach you, by which time the plane has travelled a very noticeable 250m/s * 30s = 7500 metres. And light at 300'000'000m/s, takes 10000m / 300'000'000 = 0.000033 seconds to reach you, by which time the plane has travelled a 250m/s * 0.000033s = 0.00833m, or 8mm. That 8mm is quite small, but not un-imagineable. Remarkable! It is also worthy of note that the speed ratio of sound to light is close to one million times.

[@lightningmb3321]

Bro needs to relax man

[@MrCrystal09]

@@lightningmb3321 no, they do not. This is what smart looks like, which we need

[@gianluca.g]

That's interesting. I never did the math because I'm lazy and I always thought that by the time the light reach me, the plane would have travel some micrometer or something in that ballpark. Instead, it's almost 1 centimeter which is quite a lot! So basically, when we look at planes in the sky, we are looking at "ghost images" of planes lagging 1 centimeter behind the real thing.

[@Kyuuwai]

"The closest visualization of speed of light is your movement when you hear your mom's car and you didn't unfreeze the meat"

[@melancholiac]

It has always puzzled me that in all my years of schooling not one person ever remarked to me that the speed of light is pretty much exactly a million times the speed of sound. I think it's a handy rule of thumb.

[@KinGlamour]

You can easily see the diference by looking at a storm. You will always see the light of the lightning first then after a while the sound of the thunder.

[@erynn9968]

Shhh let youtubers make their money

[@GardenDude1]

Only when the lightning is far away. When the lightning hits a tree in your yard, there is no distinguishable time lag between the flash and the ear splitting house shaking crack. But I do still count when the storm is coming in - about 5 seconds per mile.

[@evanmurphy5874]

this is applicable to track as well! my school can’t afford very good timing technology so we use stopwatches for things like the 100m dash. we stand at the finish line and the rule of thumb is start the clock when you see the guns smoke, not when you hear the gunshot.

[@doxielain2231]

The speed of light is actually really slow when considering the size of the universe.

[@josh9673]

@Just for playlists the closest stars are 4.25 light years away. Plus at light speed you get time dilation effects so essentially we could colonize hundreds of light years away without even needing to have children on the way.

[@Roger__Wilco]

From our perspective it seems slow on that scale, but to something actually travelling near the speed of light things are much different. What we're looking at is really the difference in how we experience time compared to those particles, it's more like we're observing the curvature of spacetime than the simple speed of light. If you were on a spaceship at speeds approaching the speed of light you could travel to a distant star in an hour while back on Earth 100 years have passed (just for an arbitrary example)

[@Gean...de...Oliveira]

I love car racing and you can clearly see the difference in those videos recorded by distance from the side of the circuits. Sometimes the car is visually braking and taking the corner but only a moment after the deceleration sound starts. The image is clearly ahead of the sound.

[@stephenobisanya]

Absolutely incredible explanation.

[@CadillacDriver]

You are far too easily impressed.

[@howmathematicianscreatemat9226]

To be honest, I think much more people (including YOU!) would be able to come up with his explanation than to be able to program such a visualization software….

[@xajaynegix]

Speed of light and sound depends on medium in which they are traveling.

[@brandonmar3436]

This

[@itsrasalhague]

Kudos to this channel. No "Hi guys, welcome back to my channel" kinda BS just straight knowledge

[@maxdabrd7486]

Imagine a scary universe where the speed of light and sound were opposite. You would have to rely on what you hear way before what you see.

[@realityanalyst]

Daredevil: Hold my beer.

[@kevin6293]

It’s wild to me that we are so far away from the sun that it takes 8 gd minutes for its light to get here.

[@theauggieboygamer9148]

This is also why thunder happens after the lightning, and why you can calculate the distance by the delay between the two, or why when watching a fireworks show the sound seems so delayed compared to what you’re seeing

[@darkscienceyt]

Forget my channel, THIS is an underrated channel!

[@wowalamoiz9489]

You get a sub nonetheless

[@scrubblack]

cringe

[@wowalamoiz9489]

@@scrubblack Come back when you understand what that word means

[@scrubblack]

@@wowalamoiz9489 still cringe

[@wowalamoiz9489]

@@scrubblack Get some friends

[@T1M6]

It's videos like this that keep me glued to my chair ( not literally) when I should be doing household chores. ( Now should I have a coffee and watch some more ) 😊

[@sirmega6208]

Great job 👏 keep it up

[@animationsxplaned8835]

Thanks!!

[@jonhogback783]

As an electrician.. I appreciate the screw right side up in the intro.. Thanks man

[@cinnamonroll5865]

It always fun for me to remember that light is like the maximum for the universe, even if you had a superpower that allows you to move faster than light you cant even react faster than it because light has the information that your brain processes. You'd still be restricted to lightspeed and below, even with magic scifi powers

[@danieljimenez3453]

We just can't imagine how large the universe is. When they say that our nearest star is "only" four lightyears from us it means that something that travels to the moon twice every 3 seconds reach it in four years... Crazy..

[@Pez1979]

Another great example of this is when watching Fireworks, you'll often see the flash of light when it explodes, followed a few seconds later by the sound of the explosion. The further away from the explosion you are - the longer the delay between the flash of light and the sound.

[@AftabAlam-yw4eq]

Another fun fact A human ear can only distinguish two sounds if they are 0.1 seconds apart. Sound travels at 340m/s, in 0.1 sec sound travels only 34 meters. Therefore to create an echo, a barrier or wall has to be atleast 17m away. 17m to go and 17m to bounce back, a total of 34m and travel time will be 0.1 sec so you will hear an echo.

[@jeancorriveau8686]

Light is much faster than sound because photons possess zero inertia. They require no force to move because it is its own force through the electromagnetic force. This implies (1) photons have no mass, (2) light maintains a constant velocity regardless of the orientation of its trajectory or reference frames. Finally, the electromagnetic force comes from the fabric of space itself.

[@xlynx9]

Can you please elaborate on "the electromagnetic force comes from the fabric of space itself"? Is this another way to say electromagnetism is one of the fundamental forces?

[@jeancorriveau8686]

@@xlynx9 Yes. Also, gravitation can't be a fundamental force because it is generated by matter, that is, something inside space, not space itself. Studying Feynman's quantum fields made me understand.

[@xlynx9]

@@jeancorriveau8686 but electromagnetic energy does come from matter inside space - electrons lose energy when they emit a photon.

[@BioChemistryWizard]

Wish more videos were like this. Nice to not have bs.

[@HalfDayHero]

Using a bullet to represent the speed of sound has to the most American thing I have seen in a long time.

[@issavibeyousee]

Correct me if I’m wrong, If light takes 8 minutes to travel from the sun to the earth, that means the sun we see in the sky everyday is always 8 minutes into the past. Since we can only view light the moment it reaches our eyes

[@johanjonsson6504]

yes, this means if the sun dissapaered right now, we would not now for 8 minutes.

[@issavibeyousee]

@@johanjonsson6504 oh I see, thanks

[@DarcyIsLame]

In Summary: Speed of Sound: I'm pretty fast Speed of Light: *NYYYYOOOOOM*

[@grass.avoider]

Another good example is a catcher catching a pitch. When you're watching from the outfield, it's the sound is noticeably delayed

[@moos5221]

Lightning strikes during thunderstorms and fireworks (or other explosions) are the best examples to visualize the difference between the speed of light and sound.

[@IsraeliDino]

2:13 "It would take like, 8 minutes" Hahahaha I know you said light but that caught me off guard as you were very serious and straightforward throughout the whole thing hahaha

[@jackpazin6159]

A great example of this is watching a track meet. When the starter fires the gun, you’ll see clouds for a bit and hear it later.

[@coolsoundsoftom4090]

I was playing electric guitar in a band using a wireless rig. The venue was longer of a room than wider. I walked off stage and made my way to the back of the room. What happened was I had placed enough space between me playing the guitar and hearing my amplifier, that it was noticeable. From my perspective everything was fine . I was hearing it OK and having fun playing a solo while people were milling around. From the band's perspective it was all messed up. The sound of the band is delivered to me at the back of the room at the speed of sound. I'm responding by delivering my chords and solos with a wireless transmitter, which operates at the speed of light. I didn't see any problem at all. When I got back to the stage they said they would murder me if I did it again.

[@rutger7452]

I always experience it when going to the football. One side of the stadium sings something and the other side responds. Theres always some delay in between. You also notice with the clapping

[@Frostyy]

Thanks KZbin algorithm for recommending me this video and making me feel all smart before bed time 🛏

[@VikingerOnYT]

Lovely, informative video!

[@gabrielgingras814]

One unintended effect of reducing the loudness of EDM festivals by spreading the speakers across the viewing area is reducing the delay between the music and the light show. Worked out very well at îleSoniq.

[@xsAMOR]

In video you showed us speed of light going from earth to sun and back. In one direction it takes 8min20sec, together 16min40sec - but video is only 3:01 long?

[@rourkewhite4858]

the caption said the timing of that specific part was not accurate

[@mechanismguy]

I remember seeing this for the first time as a kid watching someone framing a house from a distance. The hammer sound matched up with the top of the hammer stroke instead of the impact.

[@Mike0193Azul]

Fantastic lecture and animations

[@bryansanchez8158]

I'm always amazed about how something like light, omniprescent, almost in a magical way, actually has a finite speed. And in the scale of the whole universe, it is slow. Such a whacky but fascinating thing, light is.

[@Roger__Wilco]

It gets way more fascinating when you think of it in terms of special relativity. Light seems "slow" relative to the size of the universe when observed by us from our position in spacetime, but from the perspective of photons coming to us from the sun for example it's travelling in an instant while we would measure 8 minutes passing in that time. That 'finite speed' is actually the point at the curvature of time and space where measurable time itself almost ceases to exist, that's the limit that it's hitting and why it can't be passed.

[@mattd6085]

@@Roger__Wilco To a photon, the universe 1 dimensional. All points can be reached with no time passing. Fucks with my head

[@kaanucar22]

People who attend sports games get to experience this quite a lot, I believe. For example, in Turkey, For example, in Turkey; It is quite common for behind-the-goal stands to cheer one stand after each other - especially in football/soccer games. I always see the people on the opposite stands raising their hands for cheering, which is followed by their sound with a noticeable amount of delay.

[@thefireblade1]

This can also be put into terms of a football (soccer) game. If one stand chants something, the other is a bit behind as the sound reaches them delayed and the sound of them chanting in return is delayed

[@margotrosendorn6371]

Another way to explain it is using transmission delay in the space program. A signal to the Apollo spacecraft had so little delay that communication is practically in real time. Meanwhile, sending and receiving transmissions to the mars rover took minutes. Special software was needed to give the rover a measure of autonomy in case something happened while mission control was twiddling its thumbs. (I.e. if the rover was instructed to move forward but hit something, it would stop itself and not keep spinning its wheels.)

[@BING195]

Thanks youtube for recommending this MASTERPIECE

[@animationsxplaned8835]

Haha love it! Thank you

[@tastyambergers9327]

You can tell the speed of light is way faster than the speed of sound because while it takes just over a second for light to reach the moon from earth, sound would take like, forever to get there.

[@Roger__Wilco]

Not true, I've watched all the Star Wars movies and clearly sound can travel in space

[@mierezsaturday5855]

Stunning clarity.

[@loganhillmedia]

The basketball bouncing is a great example, last week I was a little far away from a person playing basketball and I noticed the ball had a slight delay

[@timn4481]

excellent job of showing the two.

[@jeffsadventures1]

That golden gate bridge spinning is trippy

[@o.t2001]

A really good experiment to do with this is to phone somebody like 900 metres away and have them shout really loudly. Thier phone will process the sound, send the code of information to your phoen at the speed of light, and your phone will receive the information and process it and play it back to you before you hear the sound with your own ears

[@TitaniumBaalak]

Lots of love from India 🇮🇳💕 New subscriber

[@saeleihe]

This very great to give some sense of scale to my daughter (also to me.) I find having sense of scale for this big distances is crutial while teaching basics of the modern science.

[@Jeff-mm7zu]

Firework shows are a great example too

[@murrayc9615]

When I was kid, around 7 years old, I thought something was wrong with my hearing because I experienced the sound delay. Down the street, I saw an angry kid whacking a fence post with his baseball bat for some reason (trying to break it? but it doesn't matter). I saw the image of the bat hitting the post, but it took a few seconds for the sound to reach me. At seven years old, I honestly thought I either had a hearing problem or brain condition that was slow to process sounds because of the sound delay.

[@cheesecake1255]

Ok but can we talk about how our eyes can be so wonderful that can see light at real time and always also transforming it to make a 3d space or something like that idk

[@chefrick247]

That was fantastic. Well done great vid!

[@DustinPlatt]

"The speed of light is nearly instantaneous" _Light travels in space_ Light: _out of breathe_ FCK this shit is big

[@rasydanramdan7368]

There is never a visible delay my light switch: oh hello there

[@m.nelson666]

The thing about the speed of light is that it has never truly been measured. The only speed at which it has been measured is the "two-way speed of light" (light bouncing off of a mirror and back) due to the inability to truly synchronize clocks due to time dilation. Technically, there is no way of knowing if light travels at different speeds based off of the direction it is going at the time. We only know the two-way speed of light meaning that the one-way speed of light traveling in a certain direction could be instantaneous and the other way could be c (speed of light as we know it) divided by 2. Bizarre stuff but the speed of light is incredible.

[@sproctor1958]

Rocket launches too. I live about 90 miles away from "The Cape" (beginning in 1959). Sometime last year, SpaceX launched a mission on a southerly course. When it pitched over, the engines were pointing directly at my location. The sound arrived at the calculated time, around 10 minutes later. (I don't recall exact times... it was over a year ago.) It was the first time I had actually HEARD a rocket since the Saturn V moon rockets... those monsters made _everything_ for hundreds of miles around rumble and rattle at launch! Sonic booms from Space Shuttle returns to the Cape, also.

[@PushkarCarlotto]

One should not forget to mention that sound can only travel in a medium with the help of atoms (or molecules), and the more compact the atoms (or molecules) are, the faster it travels. So I believe that the denser the medium, the faster the speed of sound.

[@Zunaw]

The last example of the basketball was really good

[@dm3261]

As a child, I used to go wakeboarding with my cousin's family. His boat had an amazing stereo system. I'll use Fuel, by Metallica as my go-to song, because Fuel is so easy to break down. From boat to board, the song went from "GIMME FUEL!" "GIMME FIRE!!" "GIMME DAT!!!" "I'D DESIRE!!!" It was crazy.

[@sixstanger00]

_"The speed of light is almost instantaneous."_ Well, on a planetary scale, sure. But universally speaking, it's unbelievably slow. Even with a distance as short as between the Earth and the Sun, it takes light eight minutes to make the trip. Anything beyond a planetary scale is going to appear sluggish.

[@BloodMoonASMR]

Woah, that's insane!

[@BrianStDenis-pj1tq]

At air shows, the jets often do fly-bys at just below the speed of sound.

[@stuartsiglain3972]

I just love all the scientists commenting. Light travels 186,000 miles per SECOND. I think that is pretty fast.

[@unclearuncle]

This feels like a video played in a Superhero Movie Montage Scene. It's very well done, don't get me wrong. But it feels like if Flash was directed by TASM's Marc Webb.

[@PureNRG2]

Still the best and simplest example of this is seeing the lightning and counting until you hear the thunder. Don’t need bullets fired from the Golden Gate Bridge to illustrate this.