Challenge #26 Question #1 - The continuous emission of radiation energy from certain substances (such as radium) appears to contradict the widely accepted theory that energy cannot be created or destroyed. Which modern physicist explained, in a special theory, that small amounts of matter in the nucleus of certain atoms are continually being converted to energy with a consequent decrease in the mass of radioactive atomic nuclei? Answer: Albert Einstein (1879-1955) in his Special Theory of Relativity Correct answer received from: Becky, borgmarsh, chris (Youth), One Cell, Don W., DAve, Nelly (Youth), Anita, benbel, Fiona, Karl Pool, Jef, Dejan, Paul Beck, Jonathan Wager (Youth), Merridy & Peter, nimesh