ABSTRACT
Above is a picture of a modern x-ray tube. Most x-rays used in crystallography are produced by similar tubes. Synchrotrons also produce x-rays used in some protein studies. Nuclear bombs produce x-rays, which caused much damage to human tissue in Hiroshima. e sun produces x-rays, as do many other stars. X-ray astronomy is an important branch of star study. Certain radioactive materials decay to produce x-rays. For example, the low intensity x-rays from radioactive 55Fe are used to test x-ray detectors.
