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radiant flux
radiant heat
radiant heating
radiate
radiation
radiation belt
radiation biology
radiation oncology
radiation pressure
radiation sickness
radiation therapy
radiational cooling
radiative collision
radiative forcing
radiator
radical
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radiation pressure
ra·di·a·tion pres·sure


noun 
Definition:
 
pressure on surface from incident light: the slight pressure exerted on a surface by incident electromagnetic radiation
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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