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Grenz rays are soft Roentgen rays having wave lengths of from 1-3 Angström units and are produced in lithium glass x-ray tubes with voltages from 4-10 kilovolts. They are called Grenz or border-line rays to express the fact that they border on the utilizable Roentgen wave length. This book discusses the exact position of the Grenz ray spectrum in the general spectrum of radiation, and describes the high tension apparatus, and tubes for their production. Grenz rays are so soft that they are absorbed in air to considerable degree. Therefore, only direct determinations of the radiation quality and quantity at
Grenz Ray Therapy.. Ann Intern Med. 1930;3:951. doi: 10.7326/0003-4819-3-9-951_1
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Published: Ann Intern Med. 1930;3(9):951.
DOI: 10.7326/0003-4819-3-9-951_1