- Aug 10, 2005
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When I was a kid, they still had foot xray machines in the shoe store.
Gilbert Chemistry sets came with a spinthariscope with a radium disk (1.2cm) on the end probably good for 20mrem/hr gamma(!) as recently as the late 1960s. And those Big Ben alarm clocks had dials that were pretty hot all about the same time. I never forget the one on the nightstand when I was very young. Its glow never faded however you could see it flickering prominently. Upon closer examination you could see bursts of light like tiny explosions all over the painted areas. These were the scintillations from alpha bursts on the zinc sulfide surface!![]()
Do you know any video sources of this? I'd really like to see it. Not first hand of course...
I heard about this in junior high. This goes hand-in-hand with Upton Sinclair's exposing the meat packing industry 15 years before. People can be horrifically malevolent when their decisions remain behind closed doors.
Back in undergrad, I took a radiochemistry class. In addition to learning the "radium girls" story, my professor passed out all sorts of old advertisements. One of them was for a radium/water concoction emblazened with the slogan, "bathe your insides with liquid sunshine!"
People are idiots. It is amazing that the human race has survived for so long.
http://www.youtube.com/watch?v=rac-zsm-B_k
Viewing with dark adapted eyes is a must. Yes you are getting irradiated with a fair amount of gamma. As long as you limit the amount of viewing to a few minutes at a time no harm. (seeing it in person though - it's hard to stop watching!)
Gilbert Chemistry sets came with a spinthariscope with a radium disk (1.2cm) on the end probably good for 20mrem/hr gamma(!) as recently as the late 1960s. And those Big Ben alarm clocks had dials that were pretty hot all about the same time. I never forget the one on the nightstand when I was very young. Its glow never faded however you could see it flickering prominently. Upon closer examination you could see bursts of light like tiny explosions all over the painted areas. These were the scintillations from alpha bursts on the zinc sulfide surface!![]()
