Page 315 - Radiation Safety

PROTECTION AGAINST EXTERNAL HAZARDS

(DISTANCE)

Distance:

➢ The intensity of radioactivity is inversely

proportional to the square of distance from a

particular point source.

I 1 d 2 2

Inverse Square Law: I 2 ˭ d 1 2

Where I and I are dose rates at distances d and d 2
1
1
2
respectively

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