What is the difference between sievert, roentgen, and gray? Why is radiation measured with different units? What other units are used to measure radiation?
In: Physics
Roentgen measures exposure, the strength of radiation at a certain point.
Gray measures the absorbed dose, the amount taken by an object.
Sievert measures the equivalent dose, the biological effects caused by radiation.
Different names are used to distinguish the 3 radiation quantities exposure, absorbed dose and equivalent dose.
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