Geiger Counter - YouTube

Name: Geiger Counter - YouTube
Uploaded: 2020-12-26T04:31:23+00:00
Description: I made a Geiger counter from a kit and found that my dad's old compass from the 60s is radioactive; it has radium on the dial.

Collected by reddit on Dec 26, 2020

I made a Geiger counter from a kit and found that my dad's old compass from the 60s is radioactive; it has radium on the dial.

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