IGCSE PHYSICS (20) - RADIOACTIVITY

paper, and gamma rays would pass through almost unimpeded. A gamma source is placed on one side of a weld and a photographic plate on the other side. Gamma rays pass through the metal, and weaknesses in ... IGCSE PHYSICS (20) - RADIOACTIVITY Author: JPG To PDF Converter Subject: New Subject Created Date: 9/26/2011 8:43:38 AM ... ................
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