Smile! A photograph was taken of you with one of these photon streams that's also known as a Roentgen ray
The rays from radium and ... 
consisting of high-energy photons, having no mass and no electric charge, and ... 
to affect a photographic plate, to cause certain substances to fluoresce, and to... [DOC] [TLE] radiation facts, information, pictures | Encyclopedia.com articles ... [PAR] Get information, facts, and pictures about radiation at Encyclopedia.com.