Medical Dictionary

half–value layer

noun half–val·ue layer \-ˈval-(ˌ)yü-, -ˈval-yə-\

Definition of HALF-VALUE LAYER

:  the thickness of an absorbing substance necessary to reduce by one half the initial intensity of the radiation passing through it
March 30, 2015
amphibology Hear it
A phrase with more than one interpretation
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