[time-nuts] Thinking outside the box a super reference
davidwhess at gmail.com
Fri Nov 4 19:45:22 EDT 2016
On Fri, 04 Nov 2016 14:39:54 -0700, you wrote:
>On Fri, Nov 4, 2016, at 02:27 PM, Poul-Henning Kamp wrote:
>> In message <2af27ebe-9200-c348-c89b-b98f9c973974 at karlquist.com>, "Richard
>> (Rick) Karlquist" w
>> >Also, one of the Rb isotopes is slightly radioactive.
>> >35 years ago, the guy in the next cubicle got away with
>> >storing it under his desk. He also happily smoked
>> >cigarettes all day at his desk. Another ERA.
>> Rb87 has a halflife north of the age of the planet as far
>> as I recall, and the result is a beta which goes nowhere
>> far and Sr87 which is stable.
>87-Rb has a half life of something like 4.9e10 years you'll be waiting
>a while for that strontium. /gp
Various online sources say that natural rubidium is radioactive enough
to fog photographic film in 1 to 2 months but that is also the case
with unprocessed uranium ore so I would not worry about it at all.
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