Sunday, 22 May 2016

7.8 understand that ionising radiations can be detected using a photographic film or a Geiger-Muller detector

Geiger-Muller detectors beep when ionizing radiation is detected. The faster the beep, the more radiation. NOTE: there will always be slow, steady beeps due to background radiation.

Photographic film is white. It absorbs radiation and turns black. NOTE: photographic film is used for X-rays, the bone part is white as the radiation is absorbed by the bone therefore the film behind it s not exposed to the radiation. Everywhere is the film where there is no bone is black as there is nothing blocking the radiation from getting through.

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