Hi Bruce, last chemistry/physics class is a while back :) I guess a half life of 50 Billion years means it's not really radiating much? No problem with Cesium then either, I guess the radiation levels must be really really low? thanks, Said In a message dated 4/23/2008 23:09:24 Pacific Daylight Time, [EMAIL PROTECTED] writes:
[EMAIL PROTECTED] wrote: > Hi Tom, > > by the way, are Cesium and Rb isotopes used in these clocks radioactive to > any degree? I remember on your website you mentioned that Cesiums have to be > shipped as hazardous material.. > > bye, > Said > > Said Both Caesium and Rubidium are chemically reactive alkali metals. Cs133, Rb85 are all stable isotopes Rb87 decays via beta emission with a half life of about 5E10 years. Bruce _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. **************Need a new ride? Check out the largest site for U.S. used car listings at AOL Autos. (http://autos.aol.com/used?NCID=aolcmp00300000002851) _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
