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igcse physics notesprinted 120 · PDF 120
124 pagesrevision 46936
printed 120 · PDF 120
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Photographic film dosimeter badges: These monitor the amount of radiation
a person has been exposed to. After the safe limit is reached, the badges
start turning from green to yellow to orange to red. Workers should be
moved from the area once their safe limit is reached.
Remote Operating of Scanners: People who operate X-rays or who may
work to treat cancer can often be exposed to radiation themselves. To
prevent this, they can control the scanner via remote control or use a
screen to prevent radiation from reaching them.
Storage boxes for sources: Explanation is given above.