Agree. I have once learn subject of cosmic rays, and found estimation, that every square meter suffer HUNDREDS events per second, of course mostly weak events.

Agree. I have once learn subject of cosmic rays, and found estimation, that every square meter suffer HUNDREDS events per second, of course mostly weak events. What I really see - on digital photo dark current test videos, usually could see few flashes. So looks like, modern ram has some sort of ecc inside chip. And yes, digital photo sensors much better suited for detecting of cosmic rays, even simplest, sure much better (semi)professional, which could tuned to make long exposition. But even on book webcam, or on smart front camera, could see events when low light (or if close lens with some opaque material).