The radioactivity itself did not create the glow. The radium was used as an alpha emitter (helium nucleus basically) to excite a zinc compound in the paint to make it self luminous.
Lots of our conversations changed topic with, "I can't tell you that."Īnyway, radium painted dials were extremely common in the aviation world, and can still be found in the warbird community with ease. I probably learned about as much from him as he did from me, albeit from different subjects. It helped that one of my students at a former job was a reactor operator on an Ohio class boat. By some governmental standards, that makes me a rad worker, especially in Europe. My office is in the front of a pressurized metal tube 5-6 miles above the ground, so I did a ton of research to make sure my profession wasn't going to kill me before my time. It does not store any personal data.My humble opinion. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. The cookies is used to store the user consent for the cookies in the category "Necessary". The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. You can also buy a copy of the study through The Geological Society here. You can read more about the study and its conclusions here. The watches tested were produced from the 1920s through the ‘60s, and are a mix of British, Swiss, and American origin. Instead, it would be better to take the box outside and remove the lid there, which would allow any built-up gas to rapidly dissipate.” To minimize the risk, I would recommend people not wear them-and if stored in a box, to not remove the lid indoors. “These watches are often precious heirlooms with sentimental value, or highly prized collectors’ items. Professor Gillmore, an environmental hazards expert and the Head of Energy at Kingston University, issued the following warning: In a much larger space, the detected levels were still high enough to warrant concern. The amount of radon monitored was even greater among those watches kept in poor condition. According to a five-year study carried out by research teams at the University of Northampton and Kingston University, and funded by UNESCO, the International Union of Geological Sciences, and the International Geoscience Programme, antique radium-dialed watches could be a legitimate health hazard for their owners.Īfter testing 30 watches kept in a typical room, researchers discovered that collectively they emitted radon, a radioactive element that is the decay product of radium, in concentrations 134 times greater than the United Kingdom’s recommended safe level.
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