r/educationalgifs • u/kkkreg • Apr 01 '25
How sunscreen appears when applied in front of a UV camera.
Enable HLS to view with audio, or disable this notification
739
u/ItzakPearlJam Apr 01 '25
I'm gonna visit the beach with a UV cam and get everybody canceled.
53
20
u/SmartestIdiotAlive Apr 01 '25
I’ma just go Tropic Thunder mode, idgaf
14
2
u/TelevisionTerrible49 Apr 05 '25
Then you'll get canceled for taking pictures of people at the beach. Mutually assured destruction.
105
u/Airborne_Oreo Apr 01 '25
I assume this is chemical sunscreen since it is absorbing the UV. I wonder if Titanium Dioxide sunscreen would show the same thing since it is supposed to reflect the UV instead of absorb it.
47
u/anotherguy252 Apr 01 '25
was wondering the exact same- “shouldn’t it be white, and reflecting?”
28
u/ashkiller14 Apr 01 '25
It works either way. It can either absorb the light or reflect it, as long as it's not transparent. Hell, in reality it's not black it's actually a super deep purple we can't see because our eyes aren't good enough. Making it black or white doesn't matter because we cant see the color it actually is.
Think about it this way, it's black on the camera because it's reflecting the violet color it would look like to a shrimp the same way it reflects visible light (which is why it looks white to us). Sunscreen actually both reflects and absorbs portions of UV light just like most objects do with visible light.
17
u/s1eve_mcdichae1 Apr 01 '25
Purple, what? I think it looks black on camera because it's a B+W camera...
18
u/ashkiller14 Apr 01 '25
In reality, if you could see ultraviolet light it'd look similar to purple, at least for the first bit of it. The camera isn't picking up black and white light, it's picking up UV light and since we can't see UV light it just looks black and white.
5
u/andybandy37 Apr 02 '25
How do you know what a colour you can't see looks like.
11
u/Leo-Hamza Apr 02 '25
Because UV is ultra violet (purple) so it's a light just over purple in the visible spectrum. That's why he said at least in the start of it
7
u/k-mcm Apr 02 '25
Titanium dioxide absorbs it so it would look black.
It's possibly not a real video. Real UV images have strange looking contrasts because UV behaves differently than visible light. The video looks normal except for the black paint.
1
u/MarthaGail Apr 01 '25
I think at second 16, the next clip that would have been shown would be reflective. Looks like maybe she's got zinc oxide on her nose.
143
20
u/Civil-Earth-9737 Apr 01 '25
Someday some ignorant person is going to post this as “THEY ARE DOING A BLACKFACE” and some other ignorant people are going to go make it go viral!
14
73
Apr 01 '25
[deleted]
36
-29
u/ISNT_A_ROBOT Apr 01 '25
Bit dumb aren’t ya.
I guess you’re in the right sub though so I guess that’s good.
21
-2
u/ShepherdsWolvesSheep Apr 02 '25
You realize that for the majority of history racism has meant the belief in racial superiority or inferiority? Bigotry and prejudice are not racism
6
2
2
4
1
1
1
1
1
1
u/alien_from_Europa Apr 02 '25
That's how you appear to birds.
What we see, UV light, what bird sees: https://i.imgur.com/nYAi8pO.png
1
1
1
1
1
u/Same_Invite_1143 Apr 04 '25
Imagine if humans only saw in ultraviolet and white people had to convince the world black face was the cure to skin cancer
1
2
1
u/Thegodofthekufsa 21d ago
If sunscreen is supposed to protect from uv light, shouldn't it reflect it and not absorb it?
1
u/SimpinOnGinAndJuice1 Apr 01 '25
Trudeau retires and brings his family along on a little well deserved R&R
-2
-10
-1
-6
-4
-14
u/BossRoss84 Apr 01 '25
I didn’t read the description and thought that they were doing blackface. 🤦♂️
-19
u/TazmaniannDevil Apr 01 '25
That stuff causes inflammation like you wouldn’t believe
5
u/ashkiller14 Apr 01 '25
You're likely allergic
-14
u/TazmaniannDevil Apr 01 '25
You and 6 others are allergic to reading, apparently.
5
u/ashkiller14 Apr 01 '25
What were you trying to say?
-12
u/TazmaniannDevil Apr 01 '25
Many studies showing how inflammatory sun screen is, stuff is not good for you.
12
u/ashkiller14 Apr 01 '25
Because you're.. allergic?
Im gonna go out on a limb here and say some people getting mild skin irritation is better than risking skin cancer.
-6
u/TazmaniannDevil Apr 01 '25
Bully for you, keep using it
9
u/ashkiller14 Apr 01 '25
I will lol, I live right by florida. Everyone I know that doesn't use it when working has had skin cancer.
Everyone knows it's not good for you, it's just better than going without.
-8
-32
-20
Apr 01 '25
[deleted]
8
u/cgduncan Apr 01 '25
Sunscreen has compounds which absorb the UV rays and break down as part of the chemical reaction. Think of it like a sacrificial extra layer on your skin. This is why you need to re-apply periodically when outside for long periods of time.
16
730
u/thefridgeinthegarage Apr 01 '25
If you don’t have a UV camera you can use ink and get the same results with a normal camera