this post was submitted on 19 Dec 2023
437 points (100.0% liked)
Memes @ Reddthat
1001 readers
382 users here now
The Memes community. Where Memes matter the most.
We abide by Reddthat's Instance Rules & the Lemmy Code of Conduct. By interacting here you agree to these terms.
Rules
- No NSFW content
- No bigotry - including racism, sexism, ableism, homophobia, transphobia, or xenophobia. Code of Conduct.
- Be respectful, especially when disagreeing. Everyone should feel welcome here.
- No porn.
- No Ads / Spamming.
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Depending on the content of the image, the compression ratio can vary a lot. The 26% figure is probably for "normal" photos. My images are mostly a few shades of black with a few white pixels (using a camera as a radiation detector) and I guess WebP is way better at compressing that than PNG.
So… detected any yet?
Yep! Here's a few hours of combined exposure of the radiation from an americium source from a smoke detector.
image
If you'd upload this image with no description I'd be sure it's a photo of stars in the sky lol
Ooh neat!!
Thumbs up.
I need to hear more
I wanted to see if I could detect the radiation from a small sample of americium-241 that I pulled out of a smoke detector, so I put a Pi camera with no lens facing it and took exposures for a couple hours. After combining them and removing dead pixels I ended up with tons of tiny white specks where radiation had hit the camera sensor. I linked the final image below, and here's a timelapse video (compositing newer frames onto older frames to keep the radiation specks). video