The stratosphere contains the ozone layer. It protects us from
the harmful UV radiations of the sun.
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In Latin language radiation is called radiationem (nominative
radiatio) "a shining, radiation," noun of action from past
participle stem of radiare "to beam, shine, gleam; make beaming
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medical dose for the purpose of medical diagnostic is excluded
from occupational dose
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Infra-red picks up thermal imagery. It related to global warming
as it contributes to the greenhouse effect. However, it also helps
us to see where the global warming is affecting the climate and how
much it is raising each year.