granite is not only radioactive, but also piezoelectric.
Dpn
On 03/29/2014 12:48 PM, Magnus Danielson wrote:
On 28/03/14 04:47, Mark Sims wrote:
no, No, NO granite! Granite tends to be rather radioactive
(particularly avoid the pink stuff). Any audiofool worth his tin
ears can't have no stinkin' alpha/beta/gamma particles mucking with
his music!
In that case you don't want a Rubidium clock in there.
Rb-87 has a 48,8 miljard years half-time with beta- emission.
Then again, it's about three times the life of universe, so it's not a
very strong radioactive source. :)
Cheers,
Magnus
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