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What Is Light?

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We are so used to some things that we stopped wondering about them. Like light. What is light? Some kind of wavy thing, right? Kind of.
Short bonus video for the people waiting for new stuff.
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What is light?
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Опубликовано:

29 авг 2024

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Комментарии : 8 тыс.

@kurzgesagt 5 лет назад

You want to learn more about science? Check out our sciency products on the kurzgesagt shop - all designed with love and produced with care. Getting something from the kurzgesagt shop is the best way to support us and to keep our videos free for everyone. ►► kgs.link/science (Worldwide Shipping Available)

@rhettmurdoch7886 5 лет назад

Kurzgesagt - In a Nutshell wazzup

@yoinkling 5 лет назад

wazzap

@syedbilal6281 5 лет назад

Hello

@Rainier214 5 лет назад

cool, thx

@sanshds7174 5 лет назад

@@Rainier214 m

@makspieprzyca4032 5 лет назад

-Everyone is asking what is light, but nobody is asking how is light *Sad photons*

@micropanda7916 5 лет назад

Idk why but because of you comment i am sad. Poor Photon :(

@OverskilLFull 5 лет назад

photon wont even have any time to experience sadness

@gocommitbreathe21oxygen11 5 лет назад

@@OverskilLFull r/woooosh

@joshr5151 5 лет назад

Star lord: where is photon? iron man: who is photon? drax: why is photon?

@AsheeshGupta1978 5 лет назад

I want to know Why is light.

@kurzgesagt 9 лет назад

Uhm. We might have made a mistake in the last rendering. No Tardis in this video. Sorry. Might hide two in the next one.

@Flame1500 9 лет назад

+In a Nutshell - Kurzgesagt haha I was looking for one and couldnt find it :D. Really interesting video, this is also what we are studying now at my school in physics so great timing! :D

@WalidAmghar 9 лет назад

+In a Nutshell - Kurzgesagt Ahh :(

@MCWaxMax 9 лет назад

+In a Nutshell - Kurzgesagt Let's just say, the time lord was busy and couldn't appear :D

@anatelles3512 9 лет назад

umm... cr cr cr oops not again

@computercrafted 9 лет назад

Can you post the video that was abandoned? It would be cool to watch it

@georgeadams5835 4 года назад

It always makes me happy when they say, 'In a nutshell'.

@ReusableRocket 4 года назад

RU-vid is so broken lol. This comment 4 days ago and only has 3 likes is the second comment I see in the comments section... so weird. (Not saying that your comment sucks, I actually liked it)

@ding5296 4 года назад

It's probably the second comment because the first is pinned by kurzgesagt

@cowgamingyt8751 4 года назад

Not an it a

@anonymous.2660 4 года назад

@ELValenin 4 года назад

@@ReusableRocket maybe the invisible comment dislikes get counted in the tree ranking.. Idk

@Natalie-101 3 года назад

At the end of videos like these, I always feel like I've learned a bunch of things and nothing at the same time

@BillAnt 2 года назад

Well, at least we saw a bunch of cute little birds just standing around.... in a nutshell. :D

@ice-nw3ps 2 года назад

Yes i feel like i cant explain what i learned properly

@charcinogeneticist 2 года назад

Light is electromagnetic radiation that can be detected by the human eye. Electromagnetic radiation occurs over an extremely wide range of wavelengths, from gamma rays with wavelengths less than about 1 × 10−11 metres to radio waves measured in metres.

@NiTeLightYears 2 года назад

Just take notes on important point

@swarikabhosale7773 Год назад

Paradox of Learning 🙂🙃💁‍♀️

@isaacbrown8907 4 года назад

I'm going to have to watch that again, it went in one ear and out the other

@maeen.. 4 года назад

Same here

@purplesloth1928 4 года назад

Honestly same

@alicelima285 4 года назад

@STaBC 4 года назад

This video has 6 million plus views. I'm betting there are only 30 of us who have watched this... and we still don't get it. :)

@kanishkasinghal3643 4 года назад

Ya same here i am small to understand these things i am learning things so that i can understand

@Platin_2004 7 лет назад

Can we rename flashlights to photoncanons? It sounds cooler and is technically correct...

@funkyhat8176 5 лет назад

it's me YES

@Jordan_Dossou 5 лет назад

Nah save that for the actual future photon cannons lol

@tarnished6642 5 лет назад

if it were literal. People in clubs are massacred

@RKEDITZ 5 лет назад

cool

@Indoraptoad 5 лет назад

it's me or plasma beams!

@Nurr0 8 лет назад

Whenever I have a stable income I'm supporting this channel, seriously. Such high quality.

@Slenderman63323 8 лет назад

Not much quantity unfortunately :( I wish Kurzgesagt could churn out 2 vids a week

@toad7395 7 лет назад

Quality > Quantity its in the channel home

@Slenderman63323 7 лет назад

Suki ???? yeah, but I'd sacrifice a little quality for an extra video every now and then yaknow? :P

@cozzie1407 7 лет назад

I wouldn't

@isnitjustkit 7 лет назад

Amen

@RainAngel111 2 года назад

Learning any physics stuff always just brings up so many more questions

@johnny5.56 Год назад

Yeah because relatively speaking we know almost nothing.

@guydreamr 9 месяцев назад

Welcome to the infinite complexity of reality.

@Joe005 9 лет назад

That feeling when Kurzgesagt release a new video ❤️

@avamander. 9 лет назад

+Jaymax, Seven minutes and this video already has 3k views and 388 likes.

@TristanVeerbeek 9 лет назад

I know right? ❤️

@justalex6953 9 лет назад

Awesome

@bojarororo 9 лет назад

+Avamander / and 7 dislikes, just like all good videos

@basik6825 9 лет назад

Yeee

@purplehaze2358 3 года назад

“Being kind of a particle and a wave at the same time...but this is a lie.” Same energy as “Well yes but actually no”.

@arnaud7008 3 года назад

The picture shown is wrong, but the idea is correct

@charcinogeneticist 2 года назад

@HetiRozmar 9 лет назад

This is heavy... Light, I mean.

@BreatheManually 9 лет назад

+WalruszMester Feeling lightheaded already?

@internetexplorerpony 9 лет назад

Hey, I see what you did there.

@jqerty 9 лет назад

+WalruszMester I C what u did there

@ThatGuy-hc2ei 9 лет назад

+WalruszMester There's that word again. Heavy. Why are things so heavy in the future? Is there a problem with the Earth's gravitational pull?

@ThatGuy-hc2ei 9 лет назад

Neo Mix That's a question I will never answer! It's to risky!

@GeneralSpecSam 3 года назад

If the universe is a simulation, the speed of light could be the rendering speed of the universe

@johnad101 3 года назад

@awesomo9 Nah, black holes are the system's recycle bin

@jonpaul3868 3 года назад

Light is actually the frame per second of our simulation game😂

@johnad101 3 года назад

@@jonpaul3868 And atoms are simply the pixels with which the universe is rendered

@oammaslastnamethei3063 3 года назад

@awesomo9 black holes are the farming simulator 2021 of our universe

@erezsolomon3838 3 года назад

2020 edition was the pandemic system being checked in the new statistics of humanity, spoiler: humanity failed. *I am of course, the bug*

@apple54345 4 года назад

So this photon walks into a hotel.. While at the check-in desk, the bellhop arrives beside him and asks "Can I take your bags for you, sir?" The photon replies "No, thank you. I'm traveling light."

@snehadavid7533 3 года назад

@LapisStone 3 года назад

nailed it

@medexamtoolscom 3 года назад

A photon walks into a hotel. But you can't ever be quite certain of that since its wave function never falls to zero even outside the hotel. Sorry, that was a stupid joke, but I couldn't resist.

@strokernut 3 года назад

@@medexamtoolscom Both were pretty good, in my opinion

@nascarcricketer4702 2 года назад

Nice my guy

@Rakinjo2 8 лет назад

So light is like.. Noises that we hear with our eyes..

@ADIIIIIIIIIIIIIIIIIIIIIIIIIIII 8 лет назад

Lol I guess so?

@Rakinjo2 8 лет назад

Well.. What else would it be? If light, radiation, radio-waves and sound are all basically just variations of the same concept, then.. Is there actually a difference between sight and sound other than the way we perceive it?

@ADIIIIIIIIIIIIIIIIIIIIIIIIIIII 8 лет назад

Rakinjo2 in a way i guess

@Rakinjo2 8 лет назад

Faze Legend You guess a lot!

@ADIIIIIIIIIIIIIIIIIIIIIIIIIIII 8 лет назад

Rakinjo2 i "GUESS" so XD

@kronos444 8 лет назад

Watt is light? Baby don't Hertz me Don't Hertz me No Morse

@manuelpinero4712 8 лет назад

hahahahaha I like it

@squiddi1393 7 лет назад

kronos444 All of those things have nothing to do with each other. L

@ShovelChef 7 лет назад

You could fit them together if you reeeally wanted to.

@LuckyFlesh 7 лет назад

Nothing in common? It's all about Electromagnetism. Watt is a measurement of electromagnetic power (current times voltage). Hertz is the frequency of the electromagnetic wave. Morse is just patterns of opening and closing electromagnetic circuits.

@lambsum 7 лет назад

;)

@controlequebrado4455 3 года назад

"What is light" baby don't blind me Don't blind me No more

@-OsterJP- 3 года назад

I just left a comment referring to this song lol

@Basil_Flowerz 3 года назад

hhhhhyes

@apucsw_ahn 3 года назад

That's what I'm expected comment, lol :D

@LapisStone 3 года назад

am i the only one who pressed "no more" thinking it would show more? yes? ok... just checking 😂

@medexamtoolscom 3 года назад

I actually expected I would see a comment like this, and that's actually why I started reading the comments, to see if I could find one. I thought it would just have changed love to light without changing anything else though. But I think a better execution would just be "What is light?" followed by 4 new lines, so you have to click *Read more* to get the punchline.

@rohanlp6403 9 лет назад

this channel is better than ted-ed

@rohanlp6403 9 лет назад

now billions of people disagree with me...

@omkarchavan5940 9 лет назад

+Rohan Rahman not better but not worse too. I think they both are at same level

@Boborbot 9 лет назад

+Omkar Chavan Ted Ed's videos don't feel nearly as polished, visually or script-wise.

@neeneko 9 лет назад

+Nitay A. Ted in general has also had increasing problems with quality control, with people producing content without really having the background to do so, but wanting to appear like they do. Ted has become high profile enough to attract people that probably are not terribly good for it.

@ClearInstructionsOnly 9 лет назад

+Rohan Rahman And even better then Clear Instruction, I guess.

@SuperTf2rocks 8 лет назад

2:30 That electron was adorable

@thehomieofepicton 8 лет назад

Weeeee!

@squid_cake 8 лет назад

Ikr (ಥ﹏ಥ)

@lilysantiago679 Год назад

No.

@stensoft 9 лет назад

Fun fact: photons do not experience time. For them, the very same instance they are created, they are also destroyed, whether it seems to us to take microseconds or millions of years.

@kadeacon 9 лет назад

+Jan Sten Adámek So, photons are not matter, because they are created and destroyed? Also, how are photons destroyed? By being absorbed into a black substance?

@stensoft 9 лет назад

***** Matter can be created and destroyed as well, energy is the stuff that cannot be created or destroyed. Photons are indeed destroyed by being absorbed.

@artwingtonr.4647 9 лет назад

+Jan Sten Adámek Vsauce?

@stensoft 9 лет назад

Vsauce and Veritassium as well but mostly Wikipedia and a lot of books (Stephen Hawking is a really good author and this fact about photons I actually know from his books)

@dragonlord23411 9 лет назад

+Juan Diego E=mc^2. Energy and matter can be converted to the other, thus matter can be destroyed by becoming energy and energy can be destroyed by becoming matter.

@matthewc5640 3 года назад

What's really mind-blowing is that from the perspective of a photon, it hits its target of absorption or the universe ends as soon as it's created, since it doesn't "experience" the passage of time

@krupt5995 Год назад

Exactly. Not to mention that the universe is flattened into a single plain perpendicular to it's velocity which is weird if we consider the universe to be infinite. From it's prespective it measures it self to be moving at a speed of c NOT 0! Also, everything else for that photon is going to move at the opposite direction in the speed of light. Even objects with mass, meaning that they are going to have infinite kinetic energy. It truly buffles me to think how would it be like if we could run at the speed of light relative to the earth for example.

@TheSnoeedog Год назад

the photon doesn't "experience" anything. While I recognize you're using the term more metaphorically, the fact is that, as far as we can tell, to experience anything requires a minimum infrastructure. That infrastructure couldn't operate coherently at the speed of light.

@kccorliss3922 9 месяцев назад

Maybe it doesn’t experience time because it is a just a vibration of space, time.

@psammiad 8 лет назад

Why is light like the navy? Because they both travel at c...

@MrRushSkies 8 лет назад

It took me 30 sec hahaha!

@ThePowerSerg922 8 лет назад

HahahahahahahaHHhhahahHhahHhahahHhaahHhahHhhahahahHhahuHHahhHhuauhUhuahuhauh

@reubenmartinez2825 8 лет назад

I'm mad at how hard I laughed at that. lol :)

@mkal1532 8 лет назад

I'm smiling and I hate it

@redmeister6758 8 лет назад

I c what you did there.

@meganerd14 6 лет назад

"-which is still way smaller than a hydrogen atom." ...I dont think I'm ready for this video...

@Br0kenMask 6 лет назад

triggered?

@tomascanevaro4292 5 лет назад

do you even know what triggered means?

@KvDenko 5 лет назад

I had to watch that part twice

@mrpepperonipizza3287 5 лет назад

Oh I'm all in for it

@mrpepperonipizza3287 5 лет назад

@Plazma03 since your name is Plasma I would expect you to know that hydrogen atoms are made of photons and electrons which makes energy smaller than that light is part of the energy range just not as small as you see the comparison with a penny and the moon

@normhiscock352 5 лет назад

Light could go faster if it stops zig zagging...

@normhiscock352 5 лет назад

@Light you're grounded...

@fujen8684 5 лет назад

lol Jolly good show XD

@mrpedrobraga 5 лет назад

Just like human life

@juancruzmunoz5963 5 лет назад

XDD

@huytrandang277 5 лет назад

Not possible

@themenace1975 3 года назад

When you think about it , we never see things immediately , there is always postponement that depends on how much time needed for the light to touch the surface of the thing and then reflect towards your eyes , but we don't feel this postponement because the time needed is just too short for our kind to notice it , however the longer the distance is the more noticeable it becomes , take for example the dead stars that are hundreds of millions light years away from us but we are still witnessing the light that is still travelling through the universe carrying the star's image . It's like watching a livestream of match through an extremely slow internet , you are still waiting for your favourite player to make his move while the match in reality ended 10 minutes ago

@BillAnt 2 года назад

Nothing is truly live in the Universe, even a meter away from your screen, the light has a small delay followed by the perception of your brain... in a nutshell, like a sports announcer says "Play the video tape!" At 3:36 is what keeps me up at night thinking about why constant "c" is what it is throughout the Universe, and why not some other arbitrary number. Hmmm....

@charcinogeneticist 2 года назад

@medexamtoolscom Год назад

Well fyi in actual practice you don't see anything hundreds of millions of light years away when you look out into the night sky, you would need a serious telescope to see any of that stuff, the stars you see are mostly pretty close. There are a few very bright ones that are thousands of light years away like eta carinae though, and you may be able to faintly see the andromeda galaxy but that's as far as you can see without serious help.

@pray4us955 10 месяцев назад

We also all see differently. We use context and standards to normalize what we see as a mass. I have no clue the way you see me from your eyes and never could.

@jplabs456 5 лет назад

‘The twin paradox, quantum stuff?’ I just love this channel.

@pianoenthusiast 4 года назад

i think they've forgotten about it :v

@RainingApocalypse 9 лет назад

Remember when Kurzgesagt used to reply to comments?

@kurzgesagt 9 лет назад

+RainingApocalypse Good times.

@thegovernerful 9 лет назад

Man, he got you good.

@arsyadzainudin9155 9 лет назад

Remember ya right....

@aphoticlight 9 лет назад

+In a Nutshell - Kurzgesagt Ahahaha good one bro.

@origamigek 9 лет назад

Social engineering at it's finest.

@marcuswebb9434 5 лет назад

Well done, you've condensed about 4 scishow crash course videos into a 4:40 minute video compared to 40 minutes and made it a billion times easier to comprehend I commend you

@SadiaAfrin-kq1ol 3 года назад

I'm always amazed at the animation they create to co with the contents, besides the amazing contents ofcourse!

@mageofmangoes8099 7 лет назад

This video was very enLIGHTening. I feel so much BRIGHTER.

@vivianchan5825 7 лет назад

Ha ha ha

@naryosh_ 7 лет назад

Noice

@marinan9418 7 лет назад

AngelWing 222 this is why people don't like you

@mageofmangoes8099 7 лет назад

+Ivana Stojanović Sadly, you're not wrong.

@cade-parkvilleproductions1039 7 лет назад

It shed some light on many things I didn't know about light before.

@youssefkandeel145 5 лет назад

Listening to this now after studying about all these things is definitely different than years before when I was hearing this for the first time

@loaduscoolclipz5505 7 лет назад

*Light is the opposite of heavy*

@acutebutdangerouspickle38 6 лет назад

Elmy actually it's spell *LITE* not *LIGHT*

@MistedFall 6 лет назад

Lol.

@shortcatz 6 лет назад

neurax reaper lite is an informal variant of light

@thanhloanle6239 6 лет назад

neurax reaper ur just sounding it out

@jormungandr5563 3 года назад

“One existential crisis please” “How original...” “An existential crisis about light” “Daring Today aren’t we!”

@MegaMitchZero 8 лет назад

Light is a teenage boy who gets a magical notebook and goes on a wild adventure of friendship in the show, Death Note.

@ruinenlust_ 8 лет назад

And I just finished Death Note. Why does it always happend that when I finish something awesome, I read comments of EXACTLY that series for the first time? Happened to Code Geass & Attack on Titan as well.

@nyagineko5064 8 лет назад

*slow clap*

@matisek274 8 лет назад

+MegaMitch Stop pulling some stupid anime into this you weeaboo! Unlike you,i am not a stupid wapanese! You are a total wapanese weeaboo! And light,is not a teenage boy from an anime but it is something which belongs to the universe,so please piss off you wapanese weeaboo.

@ruinenlust_ 8 лет назад

Erik Ondrejkovic hahaha I've watched 4 animes, I know who Light is but nobody here is a weeaboo.

@funkygecko 8 лет назад

+[ IFDIFGIF ] is code geass good for death note and aot fans? I really liked death note and i have read that they are similar. Reply plzz

@georgemissailidis1504 5 лет назад

When someone tells me what light is, i will say *_Light is the connection between us and universe._*

@negyt7665 5 лет назад

@trinity nuggets Baby don't blind me. Don't blind me, no more.

@thebreakfast8055 5 лет назад

Yeah. As if we aren’t part of the universe

@superdrabde7117 5 лет назад

Goku: fuses with picollo Gicollo: Dab

@rickrobitaille8809 5 лет назад

True but light doesn't care about you or me

@0wired0 5 лет назад

Rick Robitaille light doesnt care about your feelings

@vari1535 5 лет назад

Request: “What is humor?” Explain why we find things funny,p. :)

@danielhuang2488 5 лет назад

hey everyone, like this comment up here so they can see it.

@FireyDeath4 5 лет назад

Anyway, VSauce sounds like it'd suit that question better.

@ItsekulGaming 5 лет назад

That question is not for this channel

@cornishcactus 5 лет назад

Social bonding, cheers and gone

@flatmarssociety4614 5 лет назад

@@FireyDeath4 Vsauce is now dead

@Skirot 3 года назад

3:41 "I'm just built different" -The Universe

@swampaids 5 лет назад

1:35 the bottom right "This image is a lie"

@luismedina5792 5 лет назад

What is the truth then

@amandalaboy1449 5 лет назад

udontnomynamesostop tryingtonoitustalkers wha

@FlSCHL 5 лет назад

It means that the visual representation of it is not necessarily correct

@reniernavarro9972 4 года назад

ud nontnomynamesostop nSeeepppRrrtryingtonoitustalkersrre

@lilysantiago679 Год назад

C is the speed of light.

@Boborbot 9 лет назад

Is there anyway that we'll see the video you killed? (See endcard)

@kurzgesagt 9 лет назад

+Nitay A. Absolutely not. We need to 100% remake it.

@Sean_735 9 лет назад

+In a Nutshell - Kurzgesagt Make a second channel for -fuckups- videos that are "not good enough." People who don't want to see them won't have to, impatient people can see them early, and curious people can see what you refer to as a -fuckup- "not good enough" video, and feel bad about how your standards are so high compared to theirs.

@tusenbensen334 9 лет назад

+Seanathon James smart person with good suggestions.

@rohanlp6403 9 лет назад

+Seanathon James agreed

@Thecawesomeone 9 лет назад

+In a Nutshell - Kurzgesagt Could give it as a sort of patreon reward?

@hereLiesThisTroper 8 лет назад

What is light? Baby don't hurt me, Baby don't hurt me, No more... *proceeds to bang head*

@Slenderman63323 8 лет назад

Still a good song in my opinion

@undeadmothjiangshi 7 лет назад

ECCENTRIC 2:57 lightbike

@fettychow7648 7 лет назад

Klucky fried mayos

@livefree3884 5 лет назад

Yes

@livefree3884 5 лет назад

@@Slenderman63323 no

@spirituser7354 3 года назад

This channel is so underrated. It should have minimum 40 million plus subscribers. I got this video recommended by youtube after 5 years. It hurts to see youtube broken.

@Jombo1 8 лет назад

It would be really cool if we could see a larger range on the electromagnetic spectrum.

@herlax2 8 лет назад

NO! If we see heat and sun ultraviolet everything is going ULTRAPURPLE-RED!!!

@warriorcast8567 7 лет назад

it would hurt your eyes if you saw it all at once

@caiodecastro8596 7 лет назад

We can, we have already build machines and cameras to do that, it can be argue as an extense of "human vision". If you want to do it anytime with your eyes, than we cant rigth now, but will mostly get into it someday. Transhumanism is the future.

@dunn0r 7 лет назад

Many birds and most (all?) insects can part of the UV spectrum. Some animals, like pit vipers, can also sense infrared.

@Jordan_Dossou 7 лет назад

Jombo ask a mantis shrimp to describe light for you

@HeavyRayne 9 лет назад

What did he mean when he said that the photon's wave-particle duality is a lie?

@AnaseSkyrider 9 лет назад

+HeavyRayne I think he was referring to the images and depictions of it.

@ProfessorEGadd 9 лет назад

+HeavyRayne Possibly he means that both waves and particles are lies - both exhibit wave-particle duality, so they are both the same thing. Picking out photons as examples of w-p duality is therefore unfair, because everything could be example.

@alexandrugheorghe5610 9 лет назад

+HeavyRayne I have the same feeling. They exposed it incorrectly and most probably they meant what @ProfessorEGadd is hinting at. Anyways, any fundamental particle does exhibit wave-like particle duality it's just that when we look at one the other collapses and we get the famous experiment for the double slit. Here's a better depiction actuality which corrects the script: upload.wikimedia.org/wikipedia/commons/transcoded/e/e4/Wave-particle_duality.ogv/Wave-particle_duality.ogv.480p.webm

@loacc3672 9 лет назад

+HeavyRayne - This is consistent with Anase's comment above, but I think the lie is that light is neither particle nor wave nor both - each mathematical model (that of particles and that of waves) can say something about how light behaves, but neither can tell the whole story. It's a lie that makes quantum mechanics more accessible?

@ProfessorEGadd 9 лет назад

Alexandru Gheorghe To reiterate - all particles, fundamental or not can exhibit wave-like properties under the right circumstances. The largest things that have been observed to do so are quite sizable molecules, but in theory even people or planets could do so too. I also think you are confusing wave-functions and wave-like properties. The wave-function of a particle describes it's behaviour, which may (or may not) be wave-like. It's wave-function collapses when we observe it because it goes from potentially doing anything to doing exactly one thing. One cannot speak of wave-particle duality 'collapsing'. What you mean is that sometimes it is easier to explain phenomenon AS IF the particle was either particle or a wave, but not both. In fact there is no such thing as 'wave-like behaviour' or 'particle-like behaviour', because they are the same thing. They are nothing more than useful, historical constructs with a number of convenient, familiar analogues. Sometimes, such as in electron microscopy, it is necessary to consider both the wave and particle nature of a particle simultaneously.

@IJoeAceJRI 7 лет назад

Light is useful. It helps us 'c' things.

@michaelhartmayer1894 5 лет назад

that was 'relatively' funny ;)

@hamozbrothers9172 5 лет назад

Oh I get it hahahahahaha 😄😄😄😄😄😆😆😆😆😆😆😂😂😂😂😂😂😂🤣🤣🤣🤣🤣🤣🤣🤣🤣

@SR-uz1ov 4 года назад

Genius

@Sol_Smiley 3 года назад

I don't care what anyone says. Kurzgesagt was always amazing in quality. I remember watching this vid when it originally came out, and I was gobsmacked. The quality in every sense was enlightening. Good job Kurzgesagt. Good job.

@cuaroz5808 8 лет назад

4:04 The shadow just moved with the tan bird! I didn't know shadows could jump!

@lionelmessi8380 8 лет назад

nice observation

@potawatomi100 7 лет назад

You guys are the best. This was smartly scripted, well narrated and you produced it in an interesting and memorable way. Well done.

@gideonleezhongsheng8808 6 лет назад

REME 7hvvvhu

@gideonleezhongsheng8808 6 лет назад

Sorry my screen cracked

@MrBlackHui 9 лет назад

What is Light? Baby don't hurt me!

@Lizzymun 9 лет назад

+MrBlackHui Watt is love. Baby dont hertz me! Dont hertz me! No morse

@ClearInstructionsOnly 9 лет назад

+MrBlackHui No more....

@unlimited-edge 9 лет назад

Damn it I was gonna say that... You get a like

@tarsofelix4414 9 лет назад

+MrBlackHui The internet never disappoints me.

@rbrn9 9 лет назад

+MrBlackHui I don't want herpes, no more.

@markleng67 3 года назад

0:27 "Photons can't be split, only 'created or destroyed'". Doesn't that conflict with conservation of energy? (1/2 laws of thermodynamics).

@Ambra2003313 8 лет назад

What is Light? Baby don't blind me Don't blind me No more

@razelm 8 лет назад

+Ambra Cornea WHAT IS LIIIGHT

@kirubellemma5360 8 лет назад

+Ambra Cornea what that doesn't make sense.

@mauriciovillalba 8 лет назад

I just came for this

@rockirol1 8 лет назад

was just thinking about this song

@Spacie.AnnaMaria 8 лет назад

Why am I laughing so hard

@XDvard 6 лет назад

you guys really like hexagons

@overloader7900 5 лет назад

Who don't?

@ultraviolet.catastrophe 4 года назад

Maybe the video was made by a bee 🐝

@mariafe7050 3 года назад

the bestagons

@jinkim3186 6 лет назад

I think light behaves as the wave-particle duality, because it travels outside of our observable time frame. Due to physical limitations, observers can only observe things that have already happened. By the time they detect something, it has already happened in the past. Light, on the other hand, moves so fast that it's always at the present moment as things happen in the linear time and physical space. Basically, light will always move slightly faster than a physical observation, so it seems to exist all over the place as a wave of probabilities until it has finally been observed, at which point the light has already become a part of the past(time frame we can observe) as a particle, or an information of a fixed position of light that has been observed in this particular space-time. Looking at it that way, light perhaps exists at the borderline between matter with mass and non-matter. C, the speed of light, would most likely be the maximum frame rate of the material universe, because it exists right on the speed limit. Anything slower than light would produce mass(a fixed position in space-time which is perhaps what creates gravity), and anything faster would probably leave our linear time frame and become unobservable by direct physical means. Meaning light would appear as a wave of probabilities the moment before we detect it due to light being outside of our fixed space-time, and it would appear as a particle after we do observe it and it becomes a part of the past. But it only appears as wave-particle from our linear time perspective for both cases. It is quite possible that light exists as some other state above the C barrier, but we're only able to see it as light in the physical universe, the same way 2D beings would only be able to see flat shapes when looking at 3D beings.

@paultoensing3126 2 года назад

I love that you’re adapting your format a bit, even for a time or two. It’s a smaller time commitment and that’s an easier nibble. Please mix it up.

@thomson1761 9 лет назад

do a video on diffrent ideologies like socialism, capitalism and communism for example. May help take away the socialist fear in the US.

@kennethlim8821 9 лет назад

That is a good idea but that is a sensitive topic so might take a while to get it unbiased

@ObservableFiction 9 лет назад

+Kenneth Lim Well they made a video about the immigration crisis

@Boborbot 9 лет назад

+Kenneth Lim they had no problem uploading about the migrant crisis, but it certainly was biased. So I don't think they'll mind talking about the subject.

@canaldeFerniNY 9 лет назад

+ObservableFiction if you mean the refugee crisis, it is made and upload. Check it out

@midgetwars1 9 лет назад

+Thomson Not hard to do. Capitalism = Person control. Socialism = People control. Communism = Gov Control.

@AJoaquin305 5 лет назад

You started confusing me in 45 seconds.

@bobetdelossantos971 8 лет назад

Questions like this makes me question my existence

@lonestarr1490 8 лет назад

+bobet delos santos Whose existence?

@HexPLAYSPlus 8 лет назад

+Lone Starr A girl is no one

@lonestarr1490 8 лет назад

+Hex PLAYS Lie.

@HexPLAYSPlus 8 лет назад

Lone Starr A girl is no one!

@lonestarr1490 8 лет назад

+Hex PLAYS *smack* *smack* *K.O. smack*

@somedoof1831 3 года назад

Kurzgesagt: *asks a deep question* What Is Light? also Kurzgesasgt: puts a snail on the thumbnail

@Amy-si8gq 3 года назад

SNAIL????

@somedoof1831 3 года назад

@@Amy-si8gq thats what that is right?

@Star_light568 3 года назад

@@somedoof1831 no an ammonite

@jeffsesos4596 3 года назад

its a nautilus

@Star_light568 3 года назад

@@jeffsesos4596 no an ammonite

@poisonhemlock 8 лет назад

But candlelight never travels at c because a candle cannot burn in a vacuum, CHECKMATE!

@poisonhemlock 8 лет назад

Checkmate. I said it already.

@poisonhemlock 8 лет назад

Thanks! :)

@poisonhemlock 8 лет назад

Obviously not.

@robothawkgaming 8 лет назад

+Danny Kim light slows down in our atmosphere, since a candle cannot burn in a vacuum, candlelight will never originate going the speed of light, however it may speed up if exposed to a vacuum.

@robothawkgaming 8 лет назад

+Danny Kim I'll take your word for it, I'm just running off of the Physics class i'm taking right now.

@Basilahi 6 лет назад

WHAT IS LIGHT !!! BABY DON'T HURT ME DON'T HURT ME NO MORE

@frederickang7058 6 лет назад

Lincoln Osiris what

@michagrill9432 5 лет назад

@@frederickang7058 it's quite an old song exept its love instead of light XD

@svartdraken 5 лет назад

I have opened the video only to leave this comment

@WaffleSauze 5 лет назад

baby dont blind me... no more. sorry bud you had your chance.

@matiascassiacomerio6916 5 лет назад

The same song came to my mind while reading the videos´ title

@wowodys 6 лет назад

“Light is a particle and a wave, however this is a lie.” What’s this mean?

@Astronomynatureandmusic 5 лет назад

Because it is not exactly a particle and not exactly a wave. No one has ever observed a single photon. Knowledge about light is only derived from measurements, theories and axioms. Although we have come very far in understanding, some behaviour of light still baffles researchers. One could say that a photon is a photon is a photon - because we do not have a real watertight definition for it such as 'this is matter' or 'this is a wave'. Everyone saying they got a single closing definition for what photons are is either playing God or being a bit too sure about themselves. :)

@danielhuang2488 5 лет назад

@@Astronomynatureandmusic wow! that taught me a lot about light. thanks for the explanation!

@eliwoodnguyen1505 5 лет назад

@@Astronomynatureandmusic oh That just Blew my mind Im not ready So not ready Because all i heard or learnt was "light is a wave" then now ? O.M.G

@scorpiistar 5 лет назад

duality of light comes from youngs double slit experiment which showed that light propagates as a wave but becomes a particle when OBSERVED. this is a lie, because you do not observe LIGHT, you observe a simulation of light.....incandescence. also 'speed' of 'light' is an illusion. light does not move. an example: newtons cradle.....if you extended the balls all the way to the other side of the milky way and dropped the first ball, its energy would be transfered to the last ball on the far side of the galaxy, not at the "speed of light" but INSTANTANEOUS~LY. modern psyence is BS & these facts have been known since ancient times

@MrTeddy12397 5 лет назад

@Siniestro Triggered. God is real, and i'm going to kill it.

@sovereignsaiyans3057 3 года назад

I really respect this channel knowledge and confidence of stating what we do know as admitting still with confidence what we don’t know yet... even the part of what we don’t know yet is just as informative from what we do know. This is a great channel

@Spacie.AnnaMaria 8 лет назад

Holy cow. I was supposed to sleep, now my fatigued brain is confused

@Rakinjo2 8 лет назад

it's 3:30 in the morning, and I'm in exactly the same situation.

@Kattensimba 8 лет назад

6:35 for me XD

@Spacie.AnnaMaria 8 лет назад

Hahaha XD

@Spacie.AnnaMaria 8 лет назад

̈ Did you sleep at all ?

@Kattensimba 8 лет назад

Anna-Maria Helou no i just use energi drink

@1ucasvb 9 лет назад

"The smallest quantity of energy that can be transported" is pretty misleading. It implies an universal quantization of energy, which isn't really an accepted notion. Frequency and wavelength are, as far as we know, continuous quantities. This means you could in principle have a photon with an arbitrarily small energy, or two photons with an arbitrarily small energy difference.

@patrickyhsong 9 лет назад

+1ucasvb I believe that the quantisation of energy is well accepted in the scientific community. And frequency and wavelength are still accepted, well-established concept. I suppose that's where the whole particle-wave duality arises from?

@1ucasvb 9 лет назад

Quantization of energy arises in several contexts and different systems, but there is no accepted notion of "smallest amount of energy possible in the Universe".

@patrickyhsong 9 лет назад

Oh, OK.

@1ucasvb 9 лет назад

+Sum Vigil Energy quantization arises from boundary conditions in quantum systems. Unbound systems have a continuous spectrum of energy. An unbound electron, for instance, can have an arbitrary amount of kinetic energy if you simply change to an appropriate frame of reference. Second, a photon can have arbitrarily small energy as far as mainstream theory goes. A photon could conceivably have a wavelength the size of the visible Universe and beyond. Some upcoming theories do propose further quantizations of energy, time, space, etc., but that's not generally accepted to be true right now.

@DrBernon 9 лет назад

+1ucasvb I think is misleading because some photons carry more energy than others. it even says it on the video!!! But anyway. the idea of a quantum universe it the most likely because there are alot of phenomenon that could not be explained without it. At the same time you could say that all scientific videos are misleading, because they are all theories. So my point is that is ok to say something that is not "true" if it is the most likely, because is better to have an explanation to something than having nothing.

@robfunkhouser3793 5 лет назад

Light actually doesn't travel the speed of the universe, bc it would then outpace the speed of the universe, which isn't possible. Light is slower than the expansion of the universe, which encompasses everything we know, at least for the moment.

@RESECEO2464 3 месяца назад

This channel is one of my fav science channels on this app.. SUCH good animations and information .. perfect

@nirajjha812 5 лет назад

3:36 I have a answer: Light of speed is finite because as said by ALBERT EIENSTEIN , when speed is increased the time slows So we could say that when we reach speed of light the time stops and there is no acceleration at all without time here two theory works: Time dialiation Length contraction

@gau3463 4 года назад

fuzzy-hair crackpot

@Ahmed-tz7fz 4 года назад

can you repeat that in english?

@itsastrobit 5 лет назад

Do not go gentle into that good night. Rage, rage against the dying of the light.

@mixis1931 5 лет назад

"In a nutshell, light is..." ROLL CREDITS!

@blahthebiste7924 4 года назад

@Francisco Nieves WTF does that even mean?

@alpakapucuf3394 3 года назад

@Francisco Nieves godzilla had stroke while trying to read *THAT* and fucking died

@YourLocalCafe 3 года назад

Worry not curious repliers who didnt get the joke, the joke is basically yhat light is so fast that the video ended just as it began.

@thirtytwenty 3 года назад

this channel teaches me more than i will ever learn in school

@randomthingsinmylife 3 года назад

True

@keheck 5 лет назад

Kurzgesagt: "What does make visible light special then? Nothing!" Also Kurzgesagt: "Visible light is the only set of electromagnetic radiation that propagates well in water"

@charcinogeneticist 2 года назад

@Pawlicktics101 2 года назад

Light is never seen. Illumination is what we perceive. Light is a disturbance in the ultimate field in which should be correctly termed ," Ether ". Light is electric by Nature. Most of the Ancients understood this. The great minds that were before us allow us to stand on there shoulders.

@303gamer6 4 года назад

2:03 this noise comes from lego batman 2 when people use lasers

@Haik0 9 лет назад

Pfff, why would anyone dislike this video? :D

@neeneko 9 лет назад

+Haik0 electric universe proponents?

@gasmanoo 9 лет назад

+Haik0 Maybe they are from negative universe where matter was replaced by antimatter and thus everything they do is negative ?

@angelbar 9 лет назад

+Haik0 They are Blinded by ignorance, someday they will see the light... dont worry

@patu8010 9 лет назад

+Haik0 You mean those 8 bots? Pff.

@alexandrugheorghe5610 9 лет назад

+neeneko Hell no! Those are the Aether adepts.

@aoyuki1409 Год назад

its poetic how "see" which involves light, coincidentally in english uses the letter "c" which sounds like "see"

@ashtoncollado6192 8 лет назад

Honestly, information like this and information found in other videos by kurzgesagt, is the reason I'm not religious. All respect left aside, I can't deny knowledge like that for the sake of "faith". It's just primitive in my opinion. We should all strive to understand our universe correctly.

@akdude81 8 лет назад

For me, the more I study physics and the universe, the more it strengthens my belief in God.

@volcryndarkstar 8 лет назад

Preach

@KrazyPlonk 8 лет назад

how does knowledge like this contradict religion?

@chorosso5259 8 лет назад

KrazyPlonk _beware before reading this, the comments used are dramatisations_ well, some people think of it like this, "this was just disproven, that means anything else can't be true" and people like akdude81 think of it like this "oh, this is amazing, this proves god exists if it's this complex"

@akdude81 8 лет назад

***** Actually, I find the order in the universe to sustain my belief in God. One of my physics professor (who is atheist, as most are) says it is a miracle (and he doesn't like that word) that we live in a universe that can be described with mathematics. The physics didn't invent the mathematics to describe the universe. The mathematicians figured out the math just for fun, and the physics were able to apply it later.

@sudhanshusekharpanda5562 5 лет назад

Finally I got my answer 8yrs back when I asked this question

@Fif0l 8 лет назад

God here. When we do some maths with differential forms of Faraday's and Ampere's laws you'll get an equation of a wave. from this equation we get c^2=1/u*e, where u, magnetic permeability of vacuum and e, electric permeability of vacuum so, the speed of light is a square root of the product of these two constants.

@Fif0l 8 лет назад

#SpilHype science!

@ebcfpv4312 7 лет назад

what

@ashleyez2022 7 лет назад

Yes, but that didn't prove anything. We know that. Can you explain why?

@Fif0l 7 лет назад

Ashley Well, that explains why the speed of light is not infinite. What it does not explain though is why is the speed of light the fastest speed of causality.

@Kaserbeam 7 лет назад

So, e=mc^2? A century or so late there God

@atlas2296 3 года назад

"What is Light?" *What is Something? video flashbacks*

@obayaahmed4048 4 года назад

the wave model of light: im a joke to you kurzgazat: yes

@DjSapsan 9 лет назад

*Can black holes bend the gravity waves? If not, in linear gravity waves faster than light* =)

@TBFSJjunior 9 лет назад

What does the speed of light has to do with the speed of gravity waves and black holes? Light is absorbed by black holes due to their mass (kind of). I don't think gravity waves have this "kind of mass", and get bend like light does. (But I could be mistaken)

@DjSapsan 9 лет назад

***** vk.com/feed?section=notifications&w=wall-36127559_634738

@1_____________________ 9 лет назад

+DjSapsan Could you explain what you mean exactly? Like how you got to the conclusion.

@AnaseSkyrider 9 лет назад

+DjSapsan Gravity travels at the speed of light. Problem solved.

@DjSapsan 9 лет назад

Anase Skyrider yeah, but if put straight line from one planet to another, then gravity will coming early =)

@CowfaicdRealm 8 лет назад

I'm really looking forward to a possible video on the twin paradox. I don't know much about quantum mechanics but I'm really interested in it!

@rationalmartian 8 лет назад

+Cowfaic'd Realm The twin paradox pertains to relativity. Not QM.

@CowfaicdRealm 8 лет назад

rationalmartian Oh, excuse me, as I said, I don't know much about this stuff. I'm interested in knowing some more of it, but I don't know much about it.

@broncos435 2 года назад

not that i don't like their slimmed down theme song now, but the funkiness of that bass and the the little "doo doo doo" at the end really makes this one hit different for me

@lilacosmanthus 9 лет назад

Many animals see UV light, like my budgies. Why can't we? Why did our rods and cones stop at visible?

@huaen8880 9 лет назад

Uv light damages body cells. And most animals who can see them don't live nearly as long as humans to experience the damage, or at least that's what I think. Maybe we just don't need to see uv rays, while for other animals it's an adaptation for survival.

@__Paprika 8 лет назад

+Hua En not all UV damages cells, anything under 13.6eV won't deal damage

@cirusMEDIA 8 лет назад

+Indigo Osmanthus If our cones and rods could have also seen UV light then that too would have been called visible light! ;)

@kiharapata 8 лет назад

+Indigo Osmanthus Probably because we don't need to. Some women actually have four cones (tetrachromacy), and do see some UV light, but this condition is rare. If it exists and didn't spread along the population, it's probably because tetrachromats don't have any significant advantage over us, and so the trait didn't evolve. Since we can distinguish everything we eat fairly well (e.g. through the contrast between reds and greens), we don't really need to see in UV. With birds and insects the situation is different, though, because one of their concerns is looking for specific flowers, which do have certain pigments that reflect UV light (in fact, do some research about that, I'm sure I've read somewhere that different species of insect/bird are attracted to flowers with different UV colourations, due to co-evolution).

@lilacosmanthus 8 лет назад

Guilherme Pata wish we could do that. Sometimes a seemingly very fresh fruit is actually... not so fresh :(

@ZSXDFV 7 лет назад

Baby don't blind me, don't blind me, no more

@JoeLocksammich 6 лет назад

"kind of a particle and a wave at the same time, although this is a lie" ...."although this is a lie"... okay thanks super informative

@Mathiasisneat 4 года назад

The small text in this video makes me happier than it should

@felipedantas8153 4 года назад

esse canal é muito lindo eu amo ele do fundo do meu coração!

@Zbra1 6 лет назад

A few simple calculations later and I now know that gamma radiation does 30000000000000000000 waves every second.

@hummaidzafar2666 5 лет назад

How you did that

@arulgk9673 5 лет назад

Humaid Saifi Speed of light/Wavelength = Frequency (No. of waves per second)

@TechPacer 4 года назад

Only if Speed of light acc. To your approximation is 3*10^8

@Gassy1337 8 лет назад

i need to do my home work!!!!! AGHHHHHHHHHH!!!

@deanenares-wormald6227 8 лет назад

same!!!!!!!!!!!!!

@MegaMGstudios 8 лет назад

me too

@rickypham9453 7 лет назад

QuestGiver me too

@duwb0 6 лет назад

the answer to question 2 on your next test is B You're welcome

@bobbelzonnebril8872 6 лет назад

OH yeah thanks for Remembering me

@jeffreywang7665 Год назад

This is a huge reason why it’s very rare to become victim of crimes during daytime! I’ve always heard my parents and news state broad daylight!

@hipcolour 7 лет назад

Could you please make an episode of What is love? dont hurt me no more

@kingpotato7183 7 лет назад

Hip Colour love is your brain telling you to fuck somebody once told me the world was gonna roll I ain't the sharpest tool in the shed, she was looking kind of dumb with her finger and her thumb with a shape of an L on her forehead hey now your rockstar get your show on get paid

@tuxedo_productions 6 лет назад

Reads the first line Plays what is love in my head Hits Read more Writes this comment.

@Azenith- 6 лет назад

HiP CoLouR Love is the aftermath of an alien pooping in your brain

@Bacon_Pancakes 6 лет назад

Love is an endorphin that causes you to reproduce and not eat your children. Easy peezy.

@tesconstamylo 6 лет назад

@@johannesvonkleist6647 do not forget the adrenaline !

@flo_for7636 4 года назад

Me being like: Ohh interesting, light waves move at the speed of light, good to know.

@flo_for7636 4 года назад

Mondo Duke, thanks I guess ;)

@MultiZymethSK 9 лет назад

It's probably really stupid question, but for example when we look at stars, we ofc see how they looked in the past. So let's say, we travel in the direction of the star at the speed of light. So we will be watching the star age 2 times faster, because we would receive the photons faster because we are travelling in the direction of the light source ? Sorry for my english.

@puckie643 9 лет назад

I'm also bad at english and I don't really know much about this (I'll try :P). But I think (assuming there is no expansion of the universe) it would be seen as accelerating through time, because this travelling means light lasts less time to reach you everytime it is (bounced? blasted?) off the star, towards you. I don't know, just an idea. I'm pretty sure I'm wrong.

@puckie643 9 лет назад

And I think it doesn't doubles, it grows exponentially. But don't worry, it's a good question for "noobs" like me, I guess.

@CaligulaBoots 9 лет назад

+MultiZymethSK Good question. The speed of light, unlike everything else in the universe, is the same speed for all observers, c. As I understand the consequences of that, you wouldn't see the star age twice as quickly. Someone can correct me if I'm wrong. Here is an interesting article regarding c: io9.com/5527521/what-happens-if-youre-traveling-at-the-speed-of-light-and-turn-on-your-headlights

@swedneck 9 лет назад

+MultiZymethSK i have a very strong feeling you would see the star age at something like 1.98 times faster than we do normally.

@swedneck 9 лет назад

+CaligulaBoots But light isn't travelling at a different speed, you're just collecting twice as many photons on your retina per second.

@kingkongkungkwang 2 дня назад

I watched Kurzgesagt's recently uploaded "time travel video" and typed in the search bar "what is light." Kurzgesagt didn't disappoint.

@LissandaEloria 2 года назад

Suggestions for improvement: I suggest green be shown in the visible light spectrum I suggest if you use a cent as a reference you say ‘US cent’ if that’s what it is. However as an Australian I have no idea how big that is, so why not choose something more international? It would be worth mentioning that the retina has the ability to absorb photons - that is how we see. I’d like to see something on the properties of light but that could be a separate video 😀

@Servenifer 9 месяцев назад

Pur retina also reflects light, this is how others can see it

@TOBuhrer 4 года назад

Kurzgesagt: "But we will explore this theme in a part II video in the future" (everytime you hear this know that it will never happen..)

@quantumpanic 8 лет назад

didn't get how the particle-wave duality part was a lie

@Grejegando 7 лет назад

Was waiting for that too

@PikaPilot 2 года назад

Coming back to this video after finishing physics 2... This video is hopelessly short, and yet does its best to cram all the info it can in 5 min.

@danielevans5663 5 лет назад

I would want this guy to narrate my whole life

@apple54345 4 года назад

Imagine having a life worthy of narration :(

@XyBeatZHipHopInstrumentals 4 года назад

Become a patrion now 😂😂

@Chouchouruanruan 4 года назад

This video is way more comprehensive than my physics lesson in highschool

@erezsolomon3838 3 года назад

true

@rajatbarwal6436 2 года назад

Don't blame schools u won't get it this better anywhere else's too!! Mans legendary

@zlkf6390 3 года назад

Hi, thanks you for your videos, i like pretty all of them. I have to say that in this particular case i do not agree 100 % with the definition of light that is showed here. In many places light is understood as all the wavelenghts of the electromagnetic spectrum and not only the visible light. So it may cause a little confussion if someone goes and find the other definitions of light.

@schmetterling4477 3 года назад

Well, those places certainly don't include the physics department. When physicists say "light" they usually talk about far UV to far IR. Below and above that we are using different nomenclature like x-rays and microwaves.