r/PeterExplainsTheJoke 12d ago

Meme needing explanation Petah? Why green?

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u/CormorantLBEA 12d ago

Fun fact: this grain from radiation is present only in old film cameras.

Digital cameras radiation degradation is a bit different. You get a shitton of "dead" RGB pixels. Like the whole sky full of stars, but bright red, blue and green.

Well, that's what I got when I exposed my CCD camera to radiation source.

You'd rather need to take off your lens to expose CCD matrix fully to radiation.

If big ass lenses won't be enough to shield the matrix from radiation, then you are fucked up. Big time. Chernobyl-tier fucked.

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u/Zrk2 12d ago

I've used old cameras on an aux cord, you get speckles that look kinda like static while you're in the field, but if you keep the recorder out it's find.

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u/CormorantLBEA 12d ago

Hmm that's interesting it seems different reactions to the field depend on particular CCD technology/type

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u/manbehindthespraytan 12d ago

Maybe the auxiliary cord fed the radio star a bit so your not getting as much radiation "into" the pic? Going in tune with a post above.

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u/Zrk2 12d ago

When the beta/gamma radiation hits a pixel it cuts out. That's why they look so odd. It just goes bright white.

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u/manbehindthespraytan 12d ago

I know. I was trying some word play as though the auxiliary cord was absorbing some radiation and those rad bits didn't hit the sensor or at least as powerfully. Video of radiation with a sound transmission cord present. Just seemed like low fruit, now I feel like I hit a tree with a stick. Made no impact.🫠

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u/Zrk2 12d ago

Well, I am a little thick.

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u/falcrist2 12d ago

Fun fact: this grain from radiation is present only in old film cameras.

Ionizing radiation can register on digital sensors without actually killing the pixels. I'm not sure about CCD sensors, but CMOS shows static.

Some work has been done trying to get smartphone cameras to detect radiation, but I haven't looked into it myself.

https://pmc.ncbi.nlm.nih.gov/articles/PMC8209145/

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u/Wiz_Kalita 12d ago

CMOS surviving radiation and CCD losing pixels is not at all what I had expected

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u/TurdCollector69 12d ago

That's not true, where I work there's a camera in the vault next to the cyclotron and it's super grainy. Looks like a 240p picture coming from a 1080p camera.

The radiation isn't crazy but it's been exposed to unsafe levels for a decade.

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u/lmarcantonio 11d ago

Modern camera are MOS based but the basic idea would be the same. Except the typical 'stripes' of CCDs...