Radioactivity in real life
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Radiation is typically measured using a Geiger Muller (GM) tube, which ticks for every radioactive particle it detects.
Radioactivity can be harmful to the human body but, if used in a controlled and careful manor, can provide helpful medical benefits.
Radioactivity has many applications in the real world and has played a role in many experiments throughout history since its discovery by Henri Beckquerel when he noticed Uranium salts leaving shadows on film.
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