In the interesting video below, Derek Muller from the YouTube Channel Veritasium explains some basics regarding the measuring of radioactivity, and then he visits some of the most radioactive places on Earth with his Geiger counter in tow. At the end of the video, Derek talks about the amount of radiation he would have received if he had stayed in the most radioactive place he visited for one hour and reveals that it pales in comparison to the amount of radioactivity received by people living in some locations or engaging in certain activities. One of these activities, which is sadly still extremely common, exposes a part of the body to the greatest amount of radiation regularly received by human beings nowadays. Watch the video to find out what activity is this!
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