How UV Light Works

A demonstration of the principles behind ultraviolet light, and some of the things you can see using a UV light source. For my students in media technical theory at Ryerson University Toronto. RTA School of Media.

[@Shonade_Malik]

When you look directly at the source of a normal blacklight at a laser tag room, or a golf course room, it looks like such a beautiful deep color. Colour sensors and the camera itself prevent us from seeing the beauty of UV when looking at the screen.

[@awesomesaucer12345]

thank you! very educational reminds me of old science vids like shown in classrooms i love it

[@sasukefallen]

So if I make designs on frames with highlighter markers will a last a long time?

[@BOZAK115]

NOW I UNDERSTAND WHAT KEEPS ME SAFE FROM VOLATILES AT NIGHT

[@alexlp171]

BOZAK 115 you came from dying light too? XD

[@BOZAK115]

DeathStalker5446 Wow, that was an old comment.

[@alexlp171]

BOZAK 115. yeah i know XD

[@rhinogunner255]

you guys both excited for the new dying light 2 ? :)

[@Hellenic_Empire]

I was about to type "Anyone coming from dying light?" 😂

[@timboe123]

2:10-2:20, most uncomfortable 10 seconds of my day.

[@jorgeezildo]

imgur.com/a/fG9eB made this meme just for you

[@DtodaH]

Can you do one where you explain different nM UV ight and why some interact with some fluorescence and others not? Or point me in the right direction please?

[@15heartz]

Can infrared pick up ultraviolet. Also can speed cameras IR pick up UV? night or day

[@explorer8125]

Ok so if UV light emits photons ... can we see photons??? I was looking at a uv light the other day and when I looked close enough I could see Multiple little things moving and jumping around like I was seeing the waves jump around the objects it was under... I don’t know if that’s normal or not but I’ve been searching the web for an explanation and haven’t found one yet...

[@LUXITANE]

What elements also glow under this light?

[@Jgjbg748]

uraniu

[@Jgjbg748]

M

[@jacobbowitz]

thanks man, really cool

[@henrikmeling2753]

ooooo very cool

[@kianyoushanloo4275]

i just got my new ps2

[@Dreamskater100]

Very nice.

[@MissPiggyM976]

Thanks!

[@dcadfdfbdf2181]

Why does the UV lightbulb itself glow when it is on? Shouldnt it be invis?

[@charlieobrien8590]

They don't 'glow' they flourese (emit). The working wave length of uva is 365nm, when you shine that onto a florescent material it then converts/emits that wavelength in to a visible wavelength (445nm being indigo to 650nm being red) if they did glow you wouldn't need the black light.

[@Shonade_Malik]

Low wavelengths knock electrons off, or put them into their higher energy state, it makes them glow pretty well. I believe they're better at glowing than just the pure darkness

[@photonvoid9101]

i think you just gave your passport to the world

[@thurizaz]

I really want to know too

[@3ds12Game]

Cool

[@robg9508]

thats very interesting

[@TopTributeBands-N-Stuff]

I wanted true UV light that is used to purify water etc... Oh well, subbed ya anyway cuz I love science.

[@poul1931]

are uv tattoos safe to get?

[@laooksphetti3864]

Boom.

[@skyz3ra]

So the real answer would be that by oscillating electromagnetic fields at a certain frequency it produces uv light radiations.

[@iWatchVids4myself]

i searched uv light hoping for dying light but i got this and im happy

[@kevanhubbard9673]

UVA and UVB are used medically to treat eczema and psoriasis.I don't think that UVC is so used.

[@iLuvMisaell]

Dude its not invisible its just our retinas cant detect it

[@normalfilms7953]

Darkness is light in a certain level of light

[@vjen2152]

at the end his teeth glowed

[@ImJuned09]

thats called invisible :/

[@onesun8841]

Original video

[@randybarnett1361]

you all can uv

[@skootnewt552]

it is majicle

[@nguyennguyenvu7326]

the sound is not good I am quite disappointed

[@michaelmcmike8726]

thanks v interesting. tip of the day...you need bog roll mate :)

[@ahmedelbadawy75]

Hi

[@freshpotato4114]

it didnt workkkkkkkkkkkkk

[@ahmedelbadawy75]

Ur can not be seen

[@pixooo2808]

.

[@cooltubez]

no they don't you silly person.

[@mahdimahdikassim1592]

ali what's this talk

[@normalfilms7953]

So yes black light does exist and Lucifer is that light

[@skysands2008]

Nope. Cause Cancer. Be careful.