The Student Room Group

radiation

what is the difference between range in air and penetration? thanks x
Reply 1
so, range in air for example for alpha radiation is 1cm, so if you stood next to your smoke detector you won’t pick up any radiation as it cannot travel to you, however, if you were to sit directly infront of an alpha source and put a piece of paper infront of the source, the alpha particles would not be able to make it through they paper(penetrate) unlike beta radiation which needs something stronger to block the particles from making their way through
(edited 4 years ago)

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