Vintage Gruen: 1920's

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Re: Tank 9? [message #14813 is a reply to message #14812]

Sat, 01 May 2021 02:11

Gary
Messages: 2442
Registered: May 2013
Location: Seattle

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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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[Message index]

		Tank 9 By: Jenneke on Fri, 20 June 2014 19:20
		Re: Tank 9? By: Jenneke on Fri, 20 June 2014 19:28
		Re: Tank 9? By: afire on Fri, 20 June 2014 19:59
		Re: Tank 9? By: afire on Fri, 20 June 2014 20:35
		Re: Tank 9? By: Jenneke on Fri, 20 June 2014 21:00
		Re: Tank 9? By: MikeTheWatchGuy on Fri, 20 June 2014 21:10
		Re: Tank 9? By: Jenneke on Thu, 25 March 2021 21:31
		Re: Tank 9? By: afire on Thu, 25 March 2021 22:27
		Re: Tank 9? By: Gary on Fri, 26 March 2021 02:19
		Re: Tank 9? By: Case on Wed, 31 March 2021 01:52
		Re: Tank 9? By: Jenneke on Fri, 30 April 2021 18:07
		Re: Tank 9? By: Case on Fri, 30 April 2021 23:41
		Re: Tank 9? By: Gary on Sat, 01 May 2021 02:11

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