this post was submitted on 21 Oct 2024
367 points (97.2% liked)

People Twitter

5103 readers
1246 users here now

People tweeting stuff. We allow tweets from anyone.

RULES:

  1. Mark NSFW content.
  2. No doxxing people.
  3. Must be a tweet or similar
  4. No bullying.
  5. Be excellent to each other.

founded 1 year ago
MODERATORS
 
you are viewing a single comment's thread
view the rest of the comments
[–] WhiteOakBayou@lemmy.world 43 points 14 hours ago (4 children)

Would the grain show up in digital pictures as well or only on film? I know why it appears on film but the gnomes that work my cell phone camera won't give me a straight answer.

[–] SkidFace@lemmy.world 8 points 5 hours ago (1 children)

I’m not even sure it would show up on film either. But for CCD cameras (aka phone cameras and basically all modern cameras), 350 americium buttons buttons from a smoke detector in a wide “stew” that far away would produce nowhere near enough ionizing radiation to do that. On top of it, americium-241 is an alpha emitter, meaning that even if alpha particles reached the lens, the lens itself would block a good amount an alpha. This video gives a demo of a CCD without protection over it with americium and other various emitters :)

https://m.youtube.com/watch?v=jFNvYA7731o

[–] tomatolung@sopuli.xyz 2 points 4 hours ago

Way to bust that with reality! Kept the fact checks coming!

[–] SteveTech@programming.dev 4 points 5 hours ago

Not exactly the same, but an electron beam puts a lot of noise in the image: https://youtu.be/Uf4Ux4SlyT4

Also I've heard the international space station gets a lot of dead pixels on their cameras from cosmic radiation.

[–] 9point6@lemmy.world 19 points 14 hours ago

I don't think it would look the same, if it was a CMOS sensor, I think you'd see lots of bright white pixels

[–] Stern@lemmy.world 16 points 14 hours ago (1 children)

IIRC radiation would cause grain on a cell phone camers.

[–] techt@lemmy.world 10 points 13 hours ago

https://openscience.isae-supaero.fr/digitalCollection/DigitalCollectionAttachmentDownloadHandler.ashx?parentDocumentId=6163&documentId=11848&skipWatermark=true&skipCopyright=true

Pretty much, but highly dependent on the energy of the ionizing radiation. Lower would come out as a dull grain, higher would show up as bright spots. Neither would look like this post though lol