The World in UV

  • Δημοσιεύτηκε στις Πριν 2 χρόνια

    VeritasiumVeritasium

    διάρκεια: 11:13

    UV cameras expose a hidden world and reveal the incompleteness of our perception
    The Physics Girl looks at sunscreen: grfilms.net/v-%CE%B2%CE%AF%CE%BD%CF%84%CE%B5%CE%BF-GRD-xvlhGMc.html
    How to make sunscreen from scratch: grfilms.net/v-%CE%B2%CE%AF%CE%BD%CF%84%CE%B5%CE%BF-lMXAY5F28L0.html
    In summary, ultraviolet light interacts differently with matter for a number of reasons:
    1. Some pigments selectively absorb UV so they may appear white in the visible but dark in the UV. The pigments usually dissipate the UV energy as heat, though the breaking of bonds can also occur.
    2. Fluorescent molecules absorb UV light and re-radiate that energy as visible light. This makes them look dark in the UV but glowing under black light.
    3. Ultraviolet light scatters more than visible light because the wavelength is shorter and Raleigh scattering is proportional to the reciprocal of wavelength to the power of four.
    Special thanks to HHMI BioInteractive for their awesome animations of melanocytes and how the melanin in melanosomes protect your DNA. To see the full video explaining how we get our skin color, check out: grfilms.net/v-%CE%B2%CE%AF%CE%BD%CF%84%CE%B5%CE%BF-VC0TL_lYLm8.html
    Special thanks to Patreon supporters:
    Donal Botkin, Michael Krugman, Jeff Straathof, Zach Mueller, Ron Neal, Nathan Hansen, Yildiz Kabaran, Terrance Snow, Stan Presolski
    References:
    Overview of main UV effects:
    Visualizing Rayleigh Scattering through UV Photography
    journals.ametsoc.org/doi/pdf/10.1175/BAMS-D-14-00260.1
    Arctic animals are photographed in the UV to increase visibility and get an accurate count:
    Lavigne, D. (1976). Counting Harp Seals with ultra-violet photography. Polar Record, 18(114), 269-277. doi:10.1017/S0032247400000310
    Absorption spectrum of melanin: www.cl.cam.ac.uk/~jgd1000/melanin.html
    "The spectroscopy of human melanin pigmentation," by N. Kollias. In: Melanin: Its Role in Human Photoprotection, pp. 31 - 38. Valdenmar Publishing Co. (1995).
    "Optical properties of human sclera, and their consequences for transscleral laser applications," by A. Vogel, C. Dlugos, and R. Nuffer, Lasers in Surgery and Medicine 11(4), pp. 331 - 340 (1991).
    "The incidence and time-course of latanoprost-induced iridial pigmentation as a function of eye color," by P. Wistrand, J. Stjernschantz, and K. Olsson, Survey of Ophthalmology 41(S2), pp. S129 - S138 (1997).
    Music by Epidemic Sound: www.epidemicsound.com "Spring Moods 5"

Patrick
Patrick

Anyone know where this is? This like either Cairns or Darwin.

Πριν 3 ώρες
Coby Owen
Coby Owen

If you had the ability to only view the world in UV, would that mess up your eyes or would you easily be able to switch from UV to VIS?

Πριν 16 ώρες
Cbreazie Nutz
Cbreazie Nutz

U look Indian at the beginning 😂

Πριν ημέρα
林

My eyes hurt

Πριν ημέρα
Unknown Known Bradford
Unknown Known Bradford

This is why black people don't use sunscreen...

Πριν 2 ημέρες
Mathew Gonzalez
Mathew Gonzalez

So can we promote cellphones to incorporate this? Everyone could use this at the beach to make sure they’re covered properly

Πριν 2 ημέρες
Ninters
Ninters

Wait...so if black people rarely need sunscreen, and putting on sunscreen in UV makes you look like you have blackface on. Does that mean that.......sunscreen is artifical melanin? lmao

Πριν 2 ημέρες
Ninters
Ninters

But would his teeth be purple in UV? Isn't purple still part of the visible light spectrum? And would it be in black and white? I think there's no good way to imagine UV, cause you have to represent it with colors from Visible Light

Πριν 2 ημέρες
Jose Molina
Jose Molina

I Thought I was watching this video with english subtitles but it was in spanish, bruh

Πριν 3 ημέρες
Trishanu Ghosh
Trishanu Ghosh

2:36 He forgot to tap the sides of the bottles!

Πριν 4 ημέρες
Michael ReznoR
Michael ReznoR

If the glass absorbs so much UV, then how much more exposure do UV cameras need to record something in UV compared to visible light through all those lenses?

Πριν 5 ημέρες
Gabbeloa08
Gabbeloa08

i like that it says Ve 42.0 420 weed

Πριν 5 ημέρες
Ryan 5396
Ryan 5396

Im blue dabade dabada

Πριν 6 ημέρες
Suf A
Suf A

I, as a person who is of Indian decent, am happy to see these people turn Indian for a while. It's wonderful how just the skin color would make me think.. oh hey they are normal regular Indian usual people.

Πριν 8 ημέρες
BillHunter 1019
BillHunter 1019

Everybody gangsta till da laundry soap turn into petroleum oil

Πριν 8 ημέρες
Lord Neko
Lord Neko

Noticed the blue teeth thing stopped almost immediately...

Πριν 9 ημέρες
HacXander
HacXander

Modding real life to look like Fallout.

Πριν 9 ημέρες
unfa
unfa

OnePlus wanted to give us an IR camera in a smartphone, but they realized it's gonna let people see through clothes...

Πριν 9 ημέρες
RFC3514
RFC3514

Thats x-ray glasses, silly.

Πριν 7 ημέρες
Ajay Gupta
Ajay Gupta

What do you mean by "seeing in UV"? Is it that ur camera has a uv sensor that converts uv to visible spectrum and shows us afterprocessed image. I am really in utter confusion.

Πριν 9 ημέρες
Ajay Gupta
Ajay Gupta

@Aiden English but technically we can't see uv light so it means we're seeing different intensities of absorbed uv light by objects around us. But if that's so then how are we able to see colours, i mean we were able to see that green colour and also different colours for that flower.

Πριν 7 ημέρες
Aiden English
Aiden English

He explained it in the beginning, the lense absorbs wavelengths of light but allows UV light to pass through.

Πριν 8 ημέρες
OmegaZix
OmegaZix

I'm tripping I thought I was hearing like, halo reach ost in the background.

Πριν 10 ημέρες
Raz G
Raz G

What happened to the twi front teeth?

Πριν 10 ημέρες
Noren SINGH
Noren SINGH

if i cant see uv readiation then in which spectrum is the uv video played

Πριν 11 ημέρες
Noren SINGH
Noren SINGH

the fog is because of scattering of light as uv has a lower wavelenght so it scatters more than the visible light spectrum

Πριν 11 ημέρες
Abderrahim AOURIR
Abderrahim AOURIR

I noticed in a video that your two front teeth aren't real due to the contrast between them and the other ones who looked more real because they aren't that white

Πριν 11 ημέρες
João felipe rodrigues ;-;
João felipe rodrigues ;-;

Bruh, i always hear "ultra-violent light"

Πριν 12 ημέρες
guojun han
guojun han

ban this video

Πριν 12 ημέρες
guojun han
guojun han

racism!!!!!

Πριν 12 ημέρες
Mr.Катюша
Mr.Катюша

The UV looks like heavy air polution

Πριν 13 ημέρες
שי אבן חיים
שי אבן חיים

which brand reflect uv as shown in 8:07?

Πριν 13 ημέρες
Yoyoman_ Blue6
Yoyoman_ Blue6

My kindergarten teacher asked me what's the color of the sky. I answered Ultra Violet. I'm now in sixth grade.. thanks Derek.

Πριν 16 ημέρες
Samuel Lawrence
Samuel Lawrence

I want to see a black person’s skin in UV. Not in a racist way, I just wonder how it would look

Πριν 16 ημέρες
Dhruv Patel
Dhruv Patel

If this video came out today, people would have cancelled these people for doing black face!!

Πριν 16 ημέρες
Nallid
Nallid

Let's hope the Twitter cancel culture doesn't find this video.

Πριν 17 ημέρες
*jmeno
*jmeno

In an alternative universe: The World in VISIBLE LIGHT

Πριν 17 ημέρες
Dušan Gajdoš
Dušan Gajdoš

why didnt the PhysicsGirl take the shirt of? 🤔

Πριν 17 ημέρες
Βασιλης XD
Βασιλης XD

lel i have my same front teeth fake i feel u man

Πριν 17 ημέρες
BarBrothersTO
BarBrothersTO

anyone else notice that his two front teeth were a different colour when he mentioned it, then a few seconds later they are back to being the same as the others? 0:10 , 0:55

Πριν 18 ημέρες
MrBej
MrBej

UV is anti-racist.

Πριν 18 ημέρες
Farroxi
Farroxi

I SEE THE FOURTH COLOR

Πριν 19 ημέρες
14725800369
14725800369

What would a black men look like through an UV camera? No racism intended just curious. Especially from Angola they're very very dark almost like a raven.

Πριν 19 ημέρες
slyguy655
slyguy655

Soda water is purp drank in UV

Πριν 20 ημέρες
Tushar Jamwal
Tushar Jamwal

Polycarbonate lenses block uv, shorter wavelengths scatter more easily.

Πριν 21 ημέρα
Civilmean
Civilmean

Only me who hears the halo reach theme (the drums in the background music)?

Πριν 21 ημέρα
Alp Tunga Ozkul
Alp Tunga Ozkul

Seriously no Riddick jokes??//

Πριν 21 ημέρα
Ajith Kumar P S
Ajith Kumar P S

Are they dating

Πριν 22 ημέρες
Seaz
Seaz

0:01 "You look PURPLE" is she colorblind or sum 😂

Πριν 22 ημέρες
Zuzu
Zuzu

It did have a tinge of purple, it's more of an indigo imo though

Πριν 3 ημέρες
BloodAcidPro
BloodAcidPro

Also Melanin is illegal, so the more you have the more problems you got with the law... :D

Πριν 22 ημέρες
Marley BasseSurgeon
Marley BasseSurgeon

where'd the other half of the thumbnail go

Πριν 23 ημέρες
Рома Бондарев
Рома Бондарев

Shows black towell that look green in UV -: "Still black in uv"

Πριν 23 ημέρες
Tanzeela Mariam
Tanzeela Mariam

That's how my budgie see me

Πριν 23 ημέρες
Noel Mathew
Noel Mathew

Now do a world on radio waves

Πριν 23 ημέρες
Dominic П
Dominic П

Now try with infrared

Πριν 24 ημέρες
SimonBD
SimonBD

MY FRONTTEETH ARE FAKE TOO!!!!

Πριν 24 ημέρες
arctic 1878
arctic 1878

Kinda bizarre that this great video has almost 1000 dislikes.

Πριν 24 ημέρες
Hyperthesis
Hyperthesis

I still don't get the bit where tonic water looks bright indoors but dark outdoors. It's absorbing UV light in both situations, so why the difference?

Πριν 24 ημέρες
T T C
T T C

6+66

Πριν 25 ημέρες
kasi vishwanath boddeti
kasi vishwanath boddeti

Now i know how to fight alien in predator movie

Πριν 25 ημέρες
Mr Derp
Mr Derp

The black towel loosk red in uv. Is it only me?

Πριν 25 ημέρες
Pulsar’s pencils
Pulsar’s pencils

Everyone just looks like a blueberry

Πριν 26 ημέρες
GAMEDATA 1010
GAMEDATA 1010

7:45 but im allergic to sunscreen / sunblock and i love feeling the suns rays

Πριν 26 ημέρες
Jack Klein
Jack Klein

Mexico in American movies

Πριν 26 ημέρες
Štěpán Trtílek
Štěpán Trtílek

So this is how Kaminoans see. Interesting...

Πριν 26 ημέρες
Ronal Davis
Ronal Davis

Maybe police should wear the uv glasses. Then they would kill everyone equally. 😞

Πριν 26 ημέρες
riod kim
riod kim

It's not UV. It's Super Mario Land. He used the Superball flower and turned into this colour. Lol

Πριν 27 ημέρες
khatarnak Noobgamer
khatarnak Noobgamer

This video is cursed

Πριν 27 ημέρες
Vagner Jr
Vagner Jr

"The same with the skin..." *Proceeds to take off shirt* 5 seconds later: "...and I'm bringing Diana, the physics girl..." Me: OOOOOH YEAAAAH

Πριν 27 ημέρες
Joey Scapanski
Joey Scapanski

1:31 Left: LA with wind Right: LA without wind

Πριν 28 ημέρες
Tiny Ford
Tiny Ford

Should’ve tapped that bottle before opening it to get rid of the bubbles (yeah I watched you other video just before this)

Πριν 28 ημέρες
Flopv Leoconkraft
Flopv Leoconkraft

So if his fake teeth are purple than he is fake as well.

Πριν 28 ημέρες
Abhishek Bhardwaj
Abhishek Bhardwaj

derrik simpin dienna lol

Πριν 28 ημέρες
crguti
crguti

Are they dating?

Πριν 29 ημέρες
Aung Naing Htet
Aung Naing Htet

Now we have Oneplus 8 pro with color filtrr camera :3

Πριν 29 ημέρες
Man of the Toast
Man of the Toast

Vsauce, Michael here

Πριν μήνα
IMPc
IMPc

UV turns Caucasian black, I get it now

Πριν μήνα
Niohimself
Niohimself

It looks kinda like some parts of this video weren't shot in UV, but just filtered to look like UV, while some parts were legit UV footage.

Πριν μήνα
Ranna Ramanath
Ranna Ramanath

Trying to see uv through visible light

Πριν μήνα
dawson adams
dawson adams

So since your skin is darker in ultra violet light does blood become an even darker black?

Πριν μήνα
dan silberstein
dan silberstein

4:12 captures the absurdity of the scientific consensus belief, it makes sense that one organism would evolve based on how a completely different organism perceives the world? This is the kind of reasoning that is not only apparently acceptable, but it’s taught as truth. You are attributing a conscious decision to change for a purpose, to what is supposed to be an unconscious blind chemical reaction with no purpose.

Πριν μήνα
JellyRingNuggets
JellyRingNuggets

Wait is that black? That looks more green black though

Πριν μήνα
Bryce C.
Bryce C.

I thought black face was taboo nowadays

Πριν μήνα

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