Light waves, visible and invisible

[@heidismith9839]

The whole time I was watching this, I could only focus on how abusive these people are being towards this girl. 0:13 Glad she isn't a guy 0:57 she was definitely set up 1:06 they made her believe that there was actual fishing wire on that rod. 1:21 thats just mean. 1:41 SOUP CANS HURT! and is that wine? 2:24 they definitely spiked her drink... 3:47 VR gone wrong 4:00 they stranded her in the desert and tried to drop things on her head. 4:44 KZbin Rewind TIME 2019! 5:30 her reminiscing the time before she got captured by TED-Ed...she was told that she is going to be beheaded the following day. Can we get some F's in the chat? R.I.P wooden lady...

[@mr.fishstick_yt9955]

heidi smith thanks for the laughs

[@heidismith9839]

@@mr.fishstick_yt9955 You're Welcome!!! :P

[@jeremybutt9779]

true

[@ki7flex915]

im deaaadddd

[@elgordo6820]

F

[@Sweetitly]

Thanks to the narrator who explained how we are perceived colors as light waves--it is stunning that human eyes are designed to decode those visible light wave and send it to the brain to recognize as a distinctive color.

[@jeremybutt9779]

who else had to watch this during Covid-19

[@mrpiggyg808]

yessir

[@diegodelamacorra8901]

Me

[@hannahdimatatac3760]

Me cuz online classes

[@nathangabriels.rabeje8321]

Meee

[@clairexia1183]

Dude yes -

[@SL-dn6rn]

I'm only here because our professor in physical science linked us this video for an essay assignment

[@noornedal4574]

S L Hahahahahahahahaha

[@mushroomz3310]

Same

[@jeremybutt9779]

same

[@kendallireland6825]

*sigh* Same here

[@JoysCharms]

same

[@sikhswim]

This is the best explanation of light I've ever seen!

[@nafechowdhury8277]

2:44 what my friends think i see without glasses

[@lamar6941]

goshh, that animation will hunt the rest of my life. i wont be able to sleep. welp. :((

[@chadandjill2004]

SAME HERE

[@aaaa-lw2kz]

lmao did anyone else come here becase their teacher needed them to watch this for an assignment for school

[@flamingaish]

Yeah

[@jasminslone3844]

This was explained very well. Thank You.

[@Jclownwalk]

Good acid that she's on

[@averystark7772]

KUNDALINI I know right! I was thinking the same thing

[@syedahumaira2368]

10 years ago....

[@sope1169]

0:09 Apple Stem: Am I a joke to you?

[@0TylerDurden0]

This is amazing. I just learned today that there are colors our cones or color receptors cannot see - they're called Forbidden Colors! Colors we cannot see. Colors we haven't named --- Colors we haven't and probably will never discover. Think about it.

[@erasmusso]

If an extraterrestrial, who could see the whole spectrum of light, compared his vision to ours, he'd say we're almost blind :/

[@zanescheepers2084]

Actually, colors only exist in our minds. There are no colors we can't see, only wavelengths of light our eyes can't detect.

[@mrpiggyg808]

ok boomer

[@lamar6941]

The animation is creepy. dammit, im gonna get nightmares. ( 0:34 )

[@YonatanAlem]

Light can be powered by thermo-nuclear fusion like we see in stars, however their are other ways to power light like nuclear fission, chemical molecular reaction, mass colliding with other forms of mass, etc., etc. Light particles/waves can move so fast because they have almost no mass, making it relatively easy for those waves/particles to move at the speed of light.

[@Meximagician]

They simply use a color code to shift the light back into the visible spectrum. You've probably seen this in weather maps on the news, that's just radio waves which are then given a color code. The same thing can be used for infrared (IR) or Thermographic cameras to see heat.

[@imagineatoms]

the energy comes from various places. sometimes it's an electron jumping between orbits with the difference in energy being released as light. So if one orbit requires 3x energy to be in and then the electron drops to an orbit that requires only 1x energy, light with energy 2x is released. And it moves so fast because it is massless and everything that is massless moves at the same rate (popularly called the speed of light)

[@Hammadisteachingchemistry]

Still in awe how perfect this video is

[@MatthewPhilip-d6z]

Why is she calling radio waves light?

[@inquisitivewonderer3908]

0:24 I gasped, I thought the bowling ball was going to fall off.

[@lolerishype]

Oh it did, only it didn't show

[@cortwill4085]

Ya! me too. I almost threw my phone!

[@Sweetitly]

I knew about the idea of this brilliant KZbin clip, but perceiving of different colors which were mentioned on this clip, was very important!

[@Markus9705]

"do they convert the wave lengths that are usually out of our spectrum in order for us to see them?" Yeah, you can say that. In order to see the picture we must use visible light, yes.All you need to do is to multiply or divide the values, so you get wave lengths you can see. The cool thing here is that there're more colors than we can experience and see. There are more colors than we know. That's quite mind blowing, actually.

[@MrMegaMetroid]

Not more colours, just different wavelengths. Remember, lights doesn't have colours, as they are an addition of our brain. Everything outside of our soectrum just wasnt assigned a colour, because we cant detect in anyway. There is however nothing to indicate that the brain would make up a new colour for different wavelengths. All colours are made up by the brain and fitted onto the wavelengths you detect. We dont even know how the brain is doing it, or why its using colour specifically (since it could use basically any sensation to represent wavelengths). Extra fun fact, you CAN use different sensations to represent wavelengths by rerouting where the input is processed in the brain. Light only gets visible because its processed in the visual center of the brain. It can however, be processed in the auditory center and hearing it works just as well. Vice versa that works too. Thats how people on certain psychadelics can taste colours for example. Its all happening in the brain, colour is not a physical phenomenon, and not a property of light itself any more than pain is a property of a hot metal rod.

[@hanahnff]

😮😮😮😮😮i didnt understand it when i was in highschool only now when im older, browsing through youtubes, that i get what physics are. why we study it. and the marvel wonders of it.

[@MatthewPhilip-d6z]

Why is she calling radio waves light?

[@bitebibo]

i like how u teach us to remember the energy of light. this is sound very easy for me.

[@ohshitakimushroom]

Loved the animation!

[@syedahumaira2368]

hey you commented here 11 years ago...

[@elric5943]

How's life?

[@syedahumaira2368]

@@elric5943 gud but not like the 2010s

[@SamuelTheCoello]

Shoutout to the James Webb Space Telescope. The fact this video is 9 years old but still here to be pushed back into the KZbin algorithm, might we well. Let’s make more telescopes! 😄

[@alistairkillick2088]

Very good & witty explanation. I want to add one thought: Walkowicz calls radiation "kinds of light"; I'd like a quick clarification - "we say x-rays, microwaves, light, etc. but they are waves, so we'll call it 'kinds of light' for this talk".

[@bellagonna7825]

why did that have to happen? look closely 1:23

[@shashwatsingh1626]

damn! XD

[@ellenmafileo4374]

i didn't even realise that. bahaha

[@lolerishype]

dam thats satify

[@SaiyaraLBS]

Beautiful animations!

[@Paulholzherr]

light waves are usually shown as being vertical like this ~~~ or vvvvv I suppose that in reality light waves are more complicated than this. They must overlap and coincide and meld and mix and interfere.

[@SuperNumber420]

that is true. also, when we see colors, we are very rarely seeing one color. other than pure red, green and blue (i believe those are the three...), whenever we see a color, it is multiple wave lengths of different colors. they are put together and viewed as one color by our brain. pink, yellow, orange, magenta, they are all just different ratios of the red green and blue wavelengths that our visual system translates into one smooth color. it gets much more complex than what this video (or i) describes.

[@geancarloestrada152]

Not green, yellow

[@theodoresweger4948]

Thanks this is very enlightening for someone who appreciates science and has a love of knowledge.

[@MatthewPhilip-d6z]

Is it correct though? Is all EM radiation light?

[@abrar.shahriar]

best explanation indeed. Thank you soo much

[@giannacatimbang1756]

Thr animation of this is haunting me now-

[@wisteriablossom2730]

W to my science teacher for giving us a ted ed video as homework

[@sudiptahalder8634]

very great videos i always keep searching for these types of videos ... CAN YOU PLEASE MAKE A VIDEO ON EINSTEIN'S THEORY OF RELATIVITY......????

[@kizurain167]

whn the light hits our eye, the relative amount of energy each cone of the retina measures, signals our brain to perceive colors.

[@kizurain167]

the energy of light in our eyes tells is how it will interact with matter

[@virendrakhanzode1319]

I swear to goodness this geometrical figure is hilarious for some reason and I don’t know why

[@TheRealMake-Make]

I loved the section of precalculus that focused on frequencies, amplitudes, electromagnetism…Very cool stuff.

[@MatthewPhilip-d6z]

Is all EM radiation light?

[@TheRealMake-Make]

@ Correct. Well, probably more accurate to say all light is electromagnetic radiation.

[@MatthewPhilip-d6z]

@@TheRealMake-Make Thanks. So the visible light part of the EM spectrum is light, obviously. And the UV part. What about infrared? Gamma rays? X-rays? Microwaves? Radio waves?

[@TheRealMake-Make]

@@MatthewPhilip-d6z Yes sir, all of the above. Only the frequencies are different, they’re all part of the same spectrum. There are some pretty handy chart available for radio enthusiasts that break it all down.

[@MatthewPhilip-d6z]

@@TheRealMake-Make Thanks. But what about the following definitions of light? The Oxford Dictionary of Physics; “The form of EM radiation to which the human eye is sensitive and on which our visual awareness of the universe and its contents relies (see colour).” Brittanica; “Light is electromagnetic radiation that can be detected by the human eye.” Nasa; “When we talk about light, we usually mean any radiation that we can see.”

[@reubenlhouvum2086]

Amazing.. i learnt something new in here

[@MatthewPhilip-d6z]

Why is she calling radio waves light?

[@thecanman3833]

me after eating my older brothers special brownies: 2:24

[@jacquelinejoffe6771]

Please can you do one on nanometers I love your teaching it helps me with my work !

[@ashbeye]

is anyone else here in 12:05 am November 21 2024

[@myjourneytotheendofunivers]

The question i asked was why we can't see object smaller than wavelength of light ? And youtube recommend this video ...We think we know so much because of videos like these just giving pseudo satisfaction.

[@AvIsIoNINaDrEamR]

I think the idea of the video was how blind we are and how much we cannot see. If we evolved differently we could maybe see magnetic waves, gamma waves or radio waves. They say the amount of the Electromagnetic spectrum that we can see, if you extended it from New York to Los Angeles is only the size of one single golf ball. That is completely mind blowing.

[@princesinggh]

One of the best video in terms of description..❤❤😙

[@iezioaudi22]

WOW!!! WHAT A BRILLIANT VIDEO. THANK YOU TED ED

[@daxiaogui]

Those are the mathematical simulation of how a wave looks. They're used because this is how physical waves look. Look at a body of water to see what they mean. Does light actually move like this, nobody is actually sure but it's close enough to explain things.

[@EvanWalser]

Am I the only one that loves this video

[@TheGrape761]

0:59 is that lady okay..?

[@cr-lc8fg]

theres a lot of soup on that boat

[@lolerishype]

YEAHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH

[@KevNev]

2:23 what did she have? Drugs? Mushrooms?

[@chadandjill2004]

im gonna bet both but combined so like magic shrooms

[@KevNev]

@@chadandjill2004 wow I nearly forgot about this drug related video

[@lolerishype]

223

[@elric5943]

"These edibles ain't sh-"

[@AvIsIoNINaDrEamR]

We only call it light because we can see it. It is a human made concept. In fact what we see is a part of a spectrum so small if you extended it from New York to Los Angeles would be the size of a golf ball.

[@natepepin09]

I know that there are a few other replies to this, but I think this one is better. Imagine your favorite song, and imagine you play it at 1/100 the speed. The pitch is lowered and it isn't likely to be recognizable. But if someone in the room records it in full, and then speeds it up by 100 times, they will essentially have the original track. In the same way, if the frequency of light is too high for the eye to see, they will stretch it out until it is in the visible spectrum.

[@skypixel5466]

5:26 ...she left the electricity on...

[@rey8741]

Bruh that's sick ! Very good explanation

[@cortwill4085]

Great animation ! 👍😁😄👏🙋‍♀️ You got an A++++++++++++++++++++++ Love from Cali S. Butler April 26th, 2024

[@cendietr2283]

I think it depends. From electricity (bulb, lamp, traffic light,etc.) or thermonuclear explosions ( solar energy).

[@jamesbuckley4605]

awesome, small detail in the rainbow shot when there is a double rainbow the "inner" rainbow had is colors reversed

[@kizurain167]

the waves of light and colors are like waves of the ocean. it could be big or it could be small. this size of wave is called wavelength

[@TSA1963-b7e]

Thank You for sharing this video, very insightful ✌️

[@katiekat4457]

Excellent video. Great animations

[@BellatrixLugosi]

Since light can also be electromagnetic can we listen to light with a home radio with specific antena that works at visible spectrum?

[@klaramcgoldrick4468]

LIGHT IS ALL OF CREATION! THANK LIGHT!

[@sebastianschrage338]

I do not know it but i guess you have to edit the pictures (on a computer) by multiply the wave length. Lets say you can see from 1 to 5 and you want to see something between 0 and 1, then you simply multiply every value below 1 with 5 and got a value you are able to see

[@ThanyaC]

Very informative helps understanding the wavy nature of light and how it can be put to use:) nice animation

[@daxiaogui]

there's a special relationship between water and microwaves, which causes water to absorb energy from microwaves easily. Think of how a black shirt collects far more heat in a sunny day than a white shirt does. It's an almost identical effect.

[@abdussamad657]

Nice illustration and thanks f

[@MuhdAmran-o1y]

so if we could see wavelenghts or all spectrum of lights, then our surroundings will be too colourful right? what a mess

[@raheel9759]

I think light is visible when it hits particles and we can't see it passing through if there is no dust flying around but if it hits anybody it becomes visible

[@MinuteLaboratory]

The colors of the double rainbow at 2:50 are in wrong order. Anyway, great video!

[@MrPuppetMaster96]

What old the other light waves look like if we could see them? I can't imagine a new color!

[@chronoflect]

Kinda disappointed that you didn't include a picture of the spectrum. It really puts into perspective just how minuscule the visible light spectrum is compared to the rest of the EM spectrum.

[@abe357382]

Some people have had surgery to remove a pert of their eye lense so they could see ultra violet light or so I read somewhere

[@TinaChahhh]

Very nice video!

[@LTRB]

You do not see light. You see illumination. Illumination is the effect of light on a objects.

[@Kotifilosofi]

I wonder why we have all kind of uses not directly related to seeing for the invisible vawe leghts, such as microvawe or radio, but we only use visible light for seeing? Why there's no other useful characteristics for the visible light, but we have found these other uses for the wave lengths of the light we can't even see? Haven't we just figured them out or is there simply none? 🤔 Also, not seeing some wave legths doesn't mean we wouldn't see items that have these colors (we wouldn't be blind to them)? But we should see them just as different color. For example, many animals have colors we can't see (but these animals can), and we still see them. But the invisible wave leghts seem to not just change the color, but actually have additional information, such as internal vision to human body. The wave leghts we see are just colors, but the other wave legths seem to be "more" than just the color. I kinda don't get that 😄

[@andranohitipeuw5543]

Well, lasers are made out of concentrated visible light and it's pretty useful. Also, not seeing some wavelengths ACTUALLY mean that we wouldn't see items that have "those" colors. We humans are trichromatic beings whereas creatures like a certain type of butterfly, etc, have tetrachromatic capabilities that allows them to see different colors than us. Our eyes has limits and we can't see something that's beyond our eyes' limits.

[@Kotifilosofi]

@@andranohitipeuw5543 thank you for the reply! I was actually just thinking about these questions again the other day. I wonder if we could use visible light to send messages, such as radio waves, or if we could use it to understand structures, such as x-rays, for example? Or are these only characteristics of the certain wave lenghts? And also if we could use the invisible wave lengths to make a laser? Is it just a coincidence we use different wave lengths for different purposes, or do they have specific characteristics that make them very different in physical realm? What are these characteristics? Also, I was thinking about the example of a colorblind person. They have limits on their eyes, certain cells don't work. If you can't see certain colors, it doesn't mean that for example certain stripes of a ball are literally invisible to you, but you see them as different hues. Is this phenomenon somehow yet different from the certain wave lenghts being invisible to us? How?

[@jaygleason6387]

anybody else here hate the animations as much as I do?

[@DeepakGupta-cm5bx]

Jay Gleason Meant to be interesting for the lowest common denominator ? :)

[@andrewsebayjf]

+Deepak Gupta I guess I'm part of the lowest common denominator despite having a 4.0 GPA at my university and despite the professors from Oxford that enjoy talking with me.

[@aelitastones8012]

it's art, I think

[@1790912313]

甜\f、旭:訪、匝古方一？。

[@Nuke_Skywalker]

this one, yes. but thee are some pretty amazing ones out there.

[@cortwill4085]

Ooooooo😬! That's got to hurt! Did it knock her out?😵 0:18

[@kingoftangents]

Cool animation!

[@justsomedudeonyoutube1541]

0:14 don't tell harry

[@mudcrutched1]

You only NEED to see those wavelengths which emminate from physical objects.

[@lamar6941]

3:44 me when the light it shut and im trying to hit my sibling with a stick -_-

[@cortwill4085]

😮😮😮 hit your sibling with a stick!?!? What the #?$&

[@Antenox]

Nope, radio waves are just the waves with the longest wavelengths of the EM spectrum. There are other names for other wavelengths (e.g. microwave, infrared, ultraviolet, x-ray, gamma ray, etc.). There's no single general term that I know of for "non-visible EM radiation."

[@DemiRonin]

Made me feel like i was in middle school in the 90s

[@navneetkumaryadav7280]

Amazing, Thank you!!

[@djsupream]

what is the difference between the focal point normal light in a camera and infrared light ?

[@jinblum5253]

why i need this

[@supahsid7608]

That was so nice....

[@patmugambo7929]

So basically what we see as color is just different wavelength or false ?

[@chtadow13]

Man am so high. Enjoyed the video

[@luminouswolf7117]

Came here being quite aware that there are facets of reality not readily apparent. Unfortunately, many seem to be under the impression that they have all pertinent information on reality.. while being blind to most of it.

[@all_gaming_0556]

He you I just search ultra violent sound for long sleep can u make a video for relaxing music fo 6 hours. I want relax. The loneliness is eating me.

[@iantheimeldific]

0:42 (PAUSE IT) Thats Creepy...

[@mauriciogama1236]

You don't really understand it unless you can explain it to your grandmother .

[@cyanide-3421]

watching this because of school.. hey other comrades from apec wassup

[@lolerishype]

Ayyy hey comerade

[@nathanaelink]

I don't understand.. do they convert the wave lengths that are usually out of our spectrum in order for us to see them? Even if we make a camera that is activated by a certain wave type, how do we get in crammed back into a spectrum OUR eyes are activated by?

[@hnlkitup]

What about the amplitude of the wave? You covered frequency and wavelength but not amplitude. Also the wavelength and the frequency are inverse of each other.

[@lapispyrite6645]

What they said about visible light being what we can detect on the retina is wrong. Our cones are able to detect uv radiation, we just don't see it because it is filtered out by the lens

[@Hunter7509]

Good work

[@anasmmtaji]

“Light Light The visible reminder of Invisible Light.” ― T.S. Eliot

[@jsufi1]

a woman walking into an anvil, got hit in the groin and then fell to the ground... I dont think they know how much pain it really is...