Geiger-Muller tube. Experiment with a radioactive source (lower left), a Geiger-Muller tube (lower right) and a ratemeter (centre). A Geiger-Muller tube is used to detect levels of of radiation. Radiation passing through gas in the tube ionises it, briefly allowing a current to flow. This electrical pulse is recorded, with radioactive intensity proportional to the number of pulses in a given time period. It can detect alpha, beta and gamma radiation.
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TOP10190257
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達志影像
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