The Times 6/1/07 GK

[GabriellaG]

It records levels of exposure to radioactivity (4, 5) I have F - L - (Fall?) B - D - E and am at a loss???

[johnalex]

Film Badge

[johnalex]

Single Click:

http://images.google.co.uk/imgres?imgurl=http: //www.djb.co.uk/Graphics/Physics/RadioActivity /Film_Badge.gif&imgrefurl=http://www.djb.co.uk /SidePages/PhysicsPages/radioactivity.html&h=3 52&w=350&sz=70&hl=en&start=1&tbnid=ehR2YjEl_BP CQM:&tbnh=120&tbnw=119&prev=/images%3Fq%3D%252 2film%2Bbadge%26svnum%3D10%26hl%3Den%26lr%3D%2 6cr%3DcountryUK%7CcountryGB%26sa%3DN

[GabriellaG]

Why Film Badge???

[johnalex]

Workers in the nuclear industry wear "film badges" which are sent to a laboratory to be developed, just like your photographs. This allows us to measure the dose that each worker has received (usually each month).

The badges have "windows" made of different materials, so that we can see how much of the radiation was a particles, or b particles, or g rays.

[GabriellaG]

Excellent - many thanks