From the Vault: Heavy Water
Stuff To Blow Your Mind
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Radioactive Tracers Are Used in Medicine All the Time
Radioactive tracers are used in medicine all the time. Hevishy first demonstrated that tracer principle by using one to spy on a boarding house where he suspected his landlady was recycling food. His suggestion that she serve freshly prepared meat more than once a week was met with indignation. Confronted with the irrefutable evidence, all the landlady could do was exclaim, this is magic.
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