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==//__Nuclear Radiation__ What is it? Radioactive materials produces radioactive waste. These can be harmful to us if we come into contact with too much radiation. We can measure how much is around us and is in the air. We use a nuclear radiation meter to measure this. As you get older you become more radioactive. Here is a picture of a nuclear radiation meter. There are 3 different types of Radiation. Alpha - Its the biggest particle out of the 3 and the most dangerous. It cannot go through paper. Alpha has a plus (+) charge and so it attracts electrons. Alpha radiation particles can be stopped by paper. Beta - Is a small particle and it has a negative (-) charge so it repels the electrons. Beta radiation can be used for getting the right thickness of paper in factories. Gamma - This is a wave and we can use it for lots of things. eg. for radiotherapy. This wave is not harmful to us and it jus passes straight through.//==