What is the X ray film made of?

X-ray means radiation produced by electrons, subatomic particles that make up atoms.

Humans make x-radiation with devices called 'x-ray tubes.' Basically, it's a vaccum tube with a cathode (a metal plate that *produces* electrons in a vacuum) at one end, and an anode (the same thing, but it *collects* electrons instead) at the other. This produces an electrical current, called the 'beam,' between the two plates.

When the cathode produces electrons, they smack into the anode very, very fast. This knocks the electrons of atoms in the anode (this is usually made of an electrically conductive metal, like molybdenum, copper or tungsten) off the plate, and these *new* electrons can be collected with other machinery tuned to perform whatever task the X-rays are needed for, like radiography and such.