Nuclear Energy pp 355-359 | Cite as

Health Physics

Reference work entry
Part of the Encyclopedia of Sustainability Science and Technology Series book series (ESSTS)

Glossary

Absorbed dose

The amount of energy deposited by ionizing radiation per unit mass of the material. Usually expressed in the special radiologic unit the rad or in the SI units the gray (Gy). One Gy equals 1 J/kg or 100 rad.

Dosimeter

Any device worn or carried by an individual into a radiation area to establish total exposure, absorbed dose, or equivalent dose (or the rates) in the area or to the individual worker while occupying the area.

Dosimetry

The theory and application of principles and techniques associated with the measurement of ionizing radiation.

Epilation

Loss of hair due to damage to the follicles in the skin. Temporary epilation occurs for acute exposures in the range of 300–500 rad (3–5 Gy) with permanent epilation occurring above about 700 rad (7 Gy).

Equivalent dose (formally the dose equivalent)

The product of the absorbed dose and the radiation-weighting factor (formerly the quality factor) for the type of radiation for which the absorbed dose is measured or...

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Nuclear EngineeringTexas A&M UniversityCollege StationUSA

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