glappkaeft; I suspect you’re right that nobody competent has tried to measure this (I can’t find any papers) but I posted the question to see if anyone else had heard of an experimental test.
ibix; I am not advancing or proposing a personal theory here, I am merely seeking information on...
rootone, yes that’s what we understand cosmic background radiation to be, in which case you wouldn’t expect to be able to detect it underground or underwater. My question is has anyone ever done an experiment to verify this?
I am interested to know if cosmic microwave (160 Ghz) or cosmic radio (20-50 Mhz) background radiation has ever been measured/detected underground or underwater?
This may seem like an odd question as you’d expect lots of rock and water to attenuate or block the cosmic radiation photons, but I...