As part of an experiment with x-rays in 1909, Rutherford was shooting a beam of alpha particles (or alpha rays, emitted by the radioactive element radium) at a sheet of gold foil only 1/3000 of an ...

With the Bregman deal, another American League power was let off the leash, and the AL East is in for a dogfight.

high energy electromagnetic radiation emitted from unstable nuclei. It is normally emitted alongside alpha or beta radiation. Gamma ray emission causes no change in the number of particles in the ...

Our own bodies - muscles, bones, and tissue - contain naturally occurring radioactive elements. Man has always been exposed to natural radiation arising from the earth as well as from outside the ...