Tech Area Show and Tell: July 17 & 18, 1955
To commemorate the ten year anniversary of the Trinity test, Los Alamos opened up its 'Tech Area' to visitors - thousands of people came.
One exhibit was called 'cooking your dimes'. Here visitors placed their dimes in a counter that measured radioactivity. The units of measurement were 'rare, medium, or well-done' depending on how much radioactivity they had soaked up (it was never explained just how the dimes became radioactive in the first place).
- Hunner, Inventing Los Alamos, 188-189.
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