Grenz ray machine, Germany, 1930-1940
Grenz ray machine used for superficial therapy, by Siemens Reiniger, 1930-1940, Germany
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Glossary: x-ray machine
An X-ray machine is a device used by radiographers to acquire an x-ray image. They are used in various fields, notably medicine and security.
A wave of electromagnetic radiation that has high energy and short wavelength. It is able to pass through many materials, except those of high density such as metals or bones. Discovered in 1895 by William Roentgen.