| Re: Tank 9? [message #14813 is a reply to message #14812] |
Sat, 01 May 2021 02:11  |
Gary
Messages: 2208
Registered: May 2013
Location: Seattle
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Gruen Authority
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Would stand to be, from the Wiki
Clocks, watches, and instruments dating from the first half of the 20th century, often in military applications, may have been painted with radioactive luminous paint. They are usually no longer luminous; however, this is not due to radioactive decay of the radium (which has a half-life of 1600 years) but to the fluorescence of the zinc sulfide fluorescent medium being worn out by the radiation from the radium.[46] The appearance of an often thick layer of green or yellowish brown paint in devices from this period suggests a radioactive hazard. The radiation dose from an intact device is relatively low and usually not an acute risk; but the paint is dangerous if released and inhaled or ingested.
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