kalkulat
There was some green and yellow 'depressionware' that had uranium, with some slightly radioactive. The kinds of doses involved are in this article;
One of the early pros working with radioactivity was Marie Curie. She died of aplastic anemia in 1934. Her research notes are still radioactive. Her lab was said to be radioactive as well, yet it was not decontaminated until 1991.
Sounds like -something- is slowly cranking up the input gain trying to find a signal that's above the noise floor.
Some apps also have settings that will let you do things like that ... Audacious being one. ('Effects' section in 'Output' menu. It also has a 'Silence removal' setting that might help. ). You might try listening via different apps to see if the one you're using could be doing it.
I tried the brick once long ago. 1) No way to verif it works (not just PO's the P.O. 2) That kind of shit may be why so many public POBoxes have been removed. 3) The was of paper (up to 3.5 oz?) -seems- to have worked.
There was when the magazines were struggling to survive. They found they could publish stories for hardcore fans AND for the general public. The success of that tactic meant that a lot of great writers could pay their bills and keep writing ... instead of a few.
Same story with films and TV series.
Ay yay. I'm going to miss that one. Bartell's (local) was always a better store than Rite Aid (east coast). Hope somebody local can figure out how to restart another local, else we'll all be forever stuck with the monsters.
Good stuff!! I might have missed the thermistor part.
Everyone in the world is continually exposed to background radiation. That level has gone up considerably since the US began testing atom bombs in the atmosphere. The current AVERAGE level in THE WORLD is about 3 millisieverts per year. In the US it averages about 6 mSv per year (depending on where you live; it might be much higher.)
By comparison, these days: One chest x-ray delivers 20 μSv = .02 mSv. On the other hand, one CT scan delivers from 1 to 20 mSv.
https://en.wikipedia.org/wiki/Background_radiation