![]() § 20.1201(a)(1)(i) occupational dose limit, total effective dose equivalent, per annumĦ8 mSv: estimated maximum dose to evacuees who lived closest to the Fukushima I nuclear accidentsĨ0 mSv: 6-month stay on the International Space Stationġ60 mSv: chronic dose to lungs over one year smoking 1.5 packs of cigarettes per day, mostly due to inhalation of Polonium-210 and Lead-210Ģ50 mSv: 6-month trip to Mars - radiation due to cosmic rays, which are very difficult to shield againstĥ00 mSv: the U.S. Barium meal, up to 2 minutes, 4–24 spot imagesĥ0 mSv: U.S. 10 CFR § 20.1301(a)(1) dose limit for individual members of the public, total effective dose equivalent, per annumġ.5–1.7 mSv: annual dose for flight attendantsĢ–7 mSv: barium fluoroscopy, e.g. limit on effective dose from a single airport security screeningĨ0 μSv: average dose to people living within 10 mi (16 km) of Three Mile Island accidentĤ00–600 μSv: two-view mammogram, using weighting factors updated in 2007ġ mSv: U.S. A typical older radium wristwatch dial has a radioactivity of 3–10 kBq and could expose its wearer to an annual dose of 24 millisieverts if worn continuously.ĩ8 nSv: banana equivalent dose, an illustrative unit of radiation dose representing the measure of radiation from a typical bananaĢ50 nSv: U.S. In addition to alpha and beta rays, radium emits penetrating gamma rays, which can pass through the metal and glass of a watch dial, and skin. Radium was used in luminous paint until the 1960s, when it was replaced with the other radioisotopes above due to health concerns. It might be less or more than the numbers in the example from Wiki. ![]() Here's some data on the subject, but of course the particular watch you're planning to buy and how much lume/radioactivity it has is important. ![]() I don't think you'd die or anything but it's certainly something to consider. /r/WatchExchange for buying, selling, trading watchesīanner photo courtesy of /u/northscylla Please take a look at our community rules and FAQ before contributing!./r/WatchHorology our sister subreddit for horology, watch appreciation, history, technical discussion and related topics.Simple Questions and Recommendations ThreadĬome hang out in the Official /r/Watches Discord! Our previous Buying Guide thread: Dive Watches Check them outĪpril 2019 State of the Sub Discussion and SummaryĢ1-26 Mar 19 Baselworld 2019 Discussion MegathreadĤ Dec 18 - AMA with Arial Adams & Matt Smith-Johnson for a new LE watch collaboration with Laco. The TAG Heuer subreddit has been reactivated and is now live.Updates to the Buying Guide have begun as well! Please come and suggest watches within the specific budget and style ranges. ![]() Let's hear your thoughts on anything relating to this brand! Personal anecdotes, opinions, technical articles, and everything else are all accepted and encouraged.
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