Is there any evidence of the half-life of a certain element changing over time, or do they stay the same forever?

-- Chris Penn (penn@oswego.edu), March 26, 2001

Answers

According to the information that I discoverd at the Health Physics Society web page, 'No operation, either chemical or physical, can change the decay rate of a radioactive substance.'

http://www.hps.org/publicinformation/radfactsheets/radfact5.html

Visit this webpage and check out their readiation fact sheet:

http://www.hps.org/publicinformation/radfactsheets/

-- Mei-Ling Chen (mchen@oswego.edu), March 29, 2001.