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?
Help us caption & translate this video!
Продължителност: 4:39


Kurzgesagt – In a Nutshell
Kurzgesagt – In a Nutshell - преди година
There's brand new stuff in the Kurzgesagt Merch Shop. Check it out here: shop.kurzgesagt.org
Ortherner - преди 3 дни
ya let’s casually promote our stuff on literally every video we made, old or new.
Tancredi Capucci
Tancredi Capucci - преди 19 дни
I'm confused though... Light of corse travels at a determined constant speed... How can it be a constant though if the wavelengths are different (more/less stretched)
Just a Casual Sir Pelo fan
Just a Casual Sir Pelo fan - преди 3 месеца
Kurzgesagt pls do a video on the speed of darkness...
Sandesh Sookun
Sandesh Sookun - преди 3 месеца
out of curiosity, what was the topic of the video that you guys had to scrap?
Alliance Telecom & Trade
Alliance Telecom & Trade - преди 5 месеца
Light travel without medium cause it has photons and energy to carry it. Am I right. Please reply.
Bertrand Barbier
Bertrand Barbier - преди 5 часа
God I love this channel. That guy's voice too. Grew up listening to this series called Beyond 2000... Sounds similar.. i think
Ashton Gilmore
Ashton Gilmore - преди ден
0:25 you CAN split photons.
American Mapping
American Mapping - преди 3 дни
I would tell you that I love you tonight
But I know that I've got time on my side
Where you goin'? Why you leavin' so soon?
Is there somewhere else that's better for you?
What is light if you're not here with me?
What is lighy if it's not guaranteed?
What is light if it just ups and leaves?
What is light if you're not here no more?
What is light if you're not really sure?
What is light?
What is light?
Hosam Fikry
Hosam Fikry - преди 4 дни
Incorrect. I have a friend who ejaculates faster than the speed of light.
Hosam Fikry
Hosam Fikry - преди ден
@iiKyanite unlike you guys, he's not insecure about it.
iiKyanite - преди ден
I'm very concerned at how you know that
Isaac Brown
Isaac Brown - преди 4 дни
I'm going to have to watch that again, it went in one ear and out the other
Rocky Hernandez
Rocky Hernandez - преди 5 дни
if you set the playback speed to x2 you will get a better education than any colloge can give.
I am Geraci
I am Geraci - преди 5 дни
A nautilus apparently
Banana Bird
Banana Bird - преди 7 дни
What is light
Baby don't hurt me
Don't hurt me
No more
Hariharan Murugesan
Hariharan Murugesan - преди 7 дни
but i think light has mas. gravity means attraction between any 2 object with mass. so the black holes gravitational pull attracts the light right. so i think light might have pictoweight
kirk krieger
kirk krieger - преди 7 дни
Super entertaining...did not learn ANYTHING I didn't know already about light...
Yadav Anushka
Yadav Anushka - преди 9 дни
Where is light?
Who is light?
Why is light?
azatecas - преди 9 дни
So light is natures version of a Boolean variable lol state = true or false
Lerado2004 - преди 10 дни
What is DARK
Gavron88 - преди 9 дни
Lack of light.
KamiSilver - преди 11 дни
What is light?
Baby don't hurt me
Don't hurt me
No more
Anita Carrier
Anita Carrier - преди 11 дни
I don't think light is destroyed I think it's transformed just like matter.
Serban Ivan
Serban Ivan - преди 12 дни
Light is Kira
Nyan Dog
Nyan Dog - преди 12 дни
Light makes you see stuff.
Casius CBU
Casius CBU - преди 12 дни
im not saying😶
.... the world infested with dumb ass nutcase maniacal special interest freako entities
MDT - - преди 14 дни
Light does interfere each other at the point of +- 300,000 km/s or 3million km/0.1s
deepjoy das
deepjoy das - преди 15 дни
No such video since 5 years.. Twin paradox, quantum theory... Etc
Steven Burnett
Steven Burnett - преди 15 дни
Is a shadow faster than the light that carries it?
Digital Chicken
Digital Chicken - преди 14 дни
A shadow is just a place where there is no light or where there is less light. So, the shadow was there before the light
elf-amazon 500
elf-amazon 500 - преди 15 дни
(2:35) So theoretically you can transfer energy through "Light"
Artur Renato B.B
Artur Renato B.B - преди 11 дни
Adding to what digital chicken said, solar panels, lasers, are all energy transfer mechanisms.
Spiritus Terra
Spiritus Terra - преди 13 дни
Digital Chicken
Digital Chicken - преди 14 дни
This is what pigments do. For example, plants use this to transform light energy into "biological" energy
B Hath
B Hath - преди 17 дни
Wow light carries info thats intense thanks to you makers of this video
Brandon Greenland
Brandon Greenland - преди 18 дни
Normal person: “Human eyes use light to see. I enjoy having light around me.”
Whoop - преди 18 дни
Me after experimenting with light:
Hmm looks like light can't hold things.
The record of fastest speed:
Am I a JoKe To YoU?
M Foongage
M Foongage - преди 18 дни
Being high makes you appreciate the animation a lot more
Dutch Exploration
Dutch Exploration - преди 19 дни
"Light is the smallest quantity...."
Atom bomb: hold my beer
DJOLEX 555 - преди 20 дни
what about Tachyons
blobbish - преди 20 дни
It's so annoying when scientists don't have an answer for a question, and then they say "well, nobody knows, our universe is just built this way."
Comment - преди 3 часа
@Digital Chicken you wrote a good explanation. Your english is really good
Digital Chicken
Digital Chicken - преди 4 часа
@Comment no, absolutly nothing. My English is not the best one, so I dont know if I explained myself earlier
Comment - преди 4 часа
@Digital Chicken well yeah. Thats what im saying. Religion has nothing to do with science
Digital Chicken
Digital Chicken - преди 4 часа
@Comment religion is the absolute oposite to a real answer or a method to understand reality
Comment - преди 4 часа
@Digital Chicken i mean religion is nothing like science
Hurya Khan
Hurya Khan - преди 22 дни
Light yagami 😂😅
The Jackass Linguist
The Jackass Linguist - преди 23 дни
It’s my obligation as a follower of Omanyte to post this prayer in every video containing his holiness:

For 40 days and 40 nights he lived dormant in the depths of Mt Moon. Then after being presented with a choice, the mighty hand of truth selected him, thus banishing his evil counterpart "the dome" to the underworld beneath the catacombs for all eternity.
Switch-training was too hard, so Helix made the ultimate sacrifice one day by remaining on the battlefield instead of risking his disciples' HP.
On the night he was betrayed, he took some Pokeblocks, and giving thanks, broke them. Helix said: "take this, all of you and eat of it, for this is the shell of my body, which shall be given up for you."
In a similar way, when supper was ended, he took the chalice and once again giving thanks, said: "take this all of you and drink of it, for this chalice contains my holy hyper potion, which shall be sprayed out for you and for many for the forgiveness of sins and eternal covenant. Do this in memory of me."
Helix took a max revive and rose again on the third day in accordance with the Pokedex, and is seated at the right hand of the professor. He will come again in glory to judge the living and the fainted, and his pokepelago will have no end.
Amen 🙏🏻
Jan With Banan
Jan With Banan - преди 25 дни
...baby don't hurt me, don't hurt me... No more...
Light Way
Light Way - преди 25 дни
pure light doesn't exist, einstein is always wrong, everything exists have mass even if we can't detect it because it is too small to react to the state of matter we are in, you can zoom down to infinite, and light itself is not objective it just dimensional, and I don't know why science keep falling for that lie that einstein had made, it just the speed of photons not the speed of light.
Light Way
Light Way - преди 11 дни
I guess you are better than me, but let me tell you this Higgs field, by smashing to atoms together proved photons have mass but it is so small to detect, just that proves light is not photons, and besides this when you try to calculate the speed of something you always have to consider start point and end point, and light itself its only metaphor, where is the start point to calculate that, stop trying to prove Einstein is true, especially when he is wrong in most of his findings, maybe your just Jew, I understand how all of you forcing your ignorance on everyone.
rent a shill
rent a shill - преди 12 дни
"it just the speed of photons not the speed of light" photons are light so your whole argument is coming from personal incredulity and ignorance
Luca Esposito
Luca Esposito - преди 25 дни
Where are the others light videos?
Apurv Surya
Apurv Surya - преди 27 дни
4:07 Yeah I m happy...
Becoz of light, I can daily see my crush getting closer to another person.
Thank you universe.
Apurv Surya
Apurv Surya - преди 27 дни
Blind people: ummmmm
MDT - - преди 27 дни
Wait, so there are spectrum of lights and sound human cant hear, and no form of energy or hard material can be made or ever lost..
Are we talking about infinity??
These information alone make sense of ghosts as human dies/transform that is...religion is not stupid afterall
Digital Chicken
Digital Chicken - преди 14 дни
We dont see them with our eyes or hear them with our ears. But we can detecy them woth machines, doesnt matter the spectrum Ghosts and gods can not get detected, by anything.
EvilTrance - преди месец
Us: oh my god! Universe is so complex
Universe: Lol, they don't know anything about us
Daniel Stelmach
Daniel Stelmach - преди месец
So, can light vary in speed? And if not what is the evidence for it?
rent a shill
rent a shill - преди 29 дни
only through mediums in vacuum is constant
mEtAlMaNiAc787 - преди месец
if light so fast then why can't it escape a black hole...
Darkner - преди месец
Because black holes have a gravitational force so powerful it can bend spacetime a lot. During a solar eclipse, scientists measured the positions of the stars around the sun(from earth's perspective that is). They noticed that the stars appeared closer to the sun than where they were supposed to be, according to the documented positions. The sun's gravity had altered/bent the path of the photons. Since photons do not have mass, their direction can't be changed by any outside force, so this measurement proved Einstein's theory of relativity. That's all I can say from my knowledge. If you want to know more, you'll have to study it for yourself.
The Sixth Estate
The Sixth Estate - преди месец
Light is a perturbation of the ether and is only measured by its induction rate of said ether which is why its speed varies its just wave function. It has no duality
The Sixth Estate
The Sixth Estate - преди месец
Well versed thanks
Darkner - преди месец
I think you should study the Michelson Morley experiment.
My Gills
My Gills - преди месец
Light makes us C things
Las Aventuras del Joven Rappel
Las Aventuras del Joven Rappel - преди месец
Kurzgesagt for president now!!!
Sujan Dahal
Sujan Dahal - преди месец
Maria Lawal
Maria Lawal - преди месец
No Matter how often I watch this I'm still confused.
Esther Shin
Esther Shin - преди месец
I am fan of you and teded too
Esther Shin
Esther Shin - преди месец
Light can see the furture
Orangelina29 - преди месец
So still the light is faster than infrared and x-ray and other waves??!
rent a shill
rent a shill - преди 29 дни
those are just different wavelenghts of light wave as a whole is moving at light speed
ofek10 - преди месец
No, infrared and xray are the same thing as light so they travel the same (in vacuum).
Elder 987419
Elder 987419 - преди месец
It is a physical state of matter
Da derpy derp da derpy derp
Light - преди месец
I am light
Light - преди месец
You got your answer, now leave
Isa D43
Isa D43 - преди месец
Muito legal, mas acho que do meio até o final estava rápido de mais...
Fuego Ardiente
Fuego Ardiente - преди месец
How do we register visible light, and audible sound, but not the waves in between them? I've always wondered that
ofek10 - преди месец
what do you mean? These are completely different things. It's like asking how we eat apples and oranges but nothing in between them.
Mansoor Mirza
Mansoor Mirza - преди месец
Mansoor Mirza
Mansoor Mirza - преди месец
Rishi Chilhate
Rishi Chilhate - преди месец
How do atoms actually look like?
Please make a video about it
Darkner - преди месец
They actually already did that. Title: 'How small is an atom?' Time: 3:00
WarSquirtoise - преди месец
Baby don’t hurt me, don’t hurt me... no more.
Ben Simpson
Ben Simpson - преди месец
C is not just the speed of light, it's supposedly the speed of *causality* . That's why nothing with mass can move faster than this. Since light is massless, it actually experiences zero time or space. So from light's point of view, there is no travelling. Not only is there no such thing as travelling, there is no such thing as causality either.
So... what do you reckon?
ofek10 - преди месец
If we measure the speed of a light pulse it will be c, so it isn't incorrect to call it the speed of light. What do you want to reckon?
project 2501
project 2501 - преди месец
came here with one question left with several
HappyOttere - преди месец
It is yes