Uranium in a cloud chamber: observing the process of radiation emission & decaypic.twitter.com/VohhlGpvt3
-
-
This Tweet is unavailable.
-
for real?
- 1 more reply
-
-
-
Cosmic rays - the earth cops a lot of ionising radiation from space every second, and I’ve seen plenty of radiation in cloud chambers with no active source inside.



Plus depending on where you are there’s an observable background from bricks, ground etc.Thanks. Twitter will use this to make your timeline better. UndoUndo
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.