Film Badge| Dosimeter

Film Badge (dosimeter)

The photographic plate has chemicals like silver bromide. When exposed to light, silver bromide (exposed to x-day, alpha, beta, gamma emission), the silver bromide will turn dark. It will become black, initially it was gray. But we have the photographic film covered, so it’s no exposed and it’s grey — the film is so small.

We have aluminium and lead filters as well. And the first one has no filter. So you wear the badge and go out. In the evenings, you’ll pass the phone to the lab — the lab will process whether the film was dark or not. Dark means you were exposed to radioactivity. Green means you’re safe.

The advantage? 

It is very small can be carried out very easily. Then we have aluminium and lead filters to differentiate whether we were exposed to gamma, beta r alpha. Radiation is in whichever region that region turns dark. When having combination of radiation emissions, more than one sections can be darkened.