radiation belt

radiation belt

noun Physics.

Origin:
1955–60

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radiation belt
 
n
a region in the magnetosphere of a planet in which charged particles are trapped by the planet's magnetic field, an example being the earth's Van Allen belts

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Main Entry:  radiation belt
Part of Speech:  n
Definition:  a region around a planet where charged particles accumulate due to the planet's magnetic field
Usage:  astronomy
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