High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! Xeromammography, or Xeroradiography, is a photoelectric method of recording an x-ray image on a coated metal plate, using low-energy photon beams, long exposure time, and dry chemical developers. This process was developed in the late 1960s by Jerry Hedstrom, and used to image soft tissue, and later focused on using the process to detect breast cancer. In physics, a photon is an elementary particle, the quantum of the electromagnetic interaction and the basic unit of light and all other forms of electromagnetic radiation. It is also the force carrier for the electromagnetic force. The effects of this force are easily observable at both the microscopic and macroscopic level, because the photon has no rest mass; this allows for interactions at long distances.

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