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Then no measure which vanishes at points on Z is a Radon measure, since any compact set in Z is countable. Standard product measure on (0, 1) κ for uncountable κ is not a Radon measure, since any compact set is contained within a product of uncountably many closed intervals, each of which is shorter than 1.
Radon concentrations can vary daily, and accurate radon exposure estimates require long-term average radon measurements in the spaces where an individual spends a significant amount of time. [ 172 ] Radon levels fluctuate naturally, due to factors like transient weather conditions, so an initial test might not be an accurate assessment of a ...
Current methods make it difficult to measure half-lives between approximately 10 −19 and 10 −10 seconds ... radon-211: 14.6 53 sodium-24: 14.96 53.9 americium-242 ...
Radon is thus assumed to be the second leading cause of lung cancer after smoking, and accounts for 15,000 to 22,000 cancer deaths per year in the US alone. [9] [better source needed] However, the discussion about the opposite experimental results is still going on. [10] About 100,000 Bq/m 3 of radon was found in Stanley Watras's basement in 1984.
Preiss' theorem: Let be a Radon measure on . Suppose that m ≥ 1 {\displaystyle \geq 1} is an integer and the m -density Θ m ( μ , a ) {\displaystyle \Theta ^{m}(\mu ,a)} exists and is positive and finite for μ {\displaystyle \mu } almost every a in the support of μ {\displaystyle \mu } .
A Lucas cell can be used to measure radon gas concentrations. [2] Radon itself is an inert gas.Its danger lies in the fact that it undergoes radioactive decay.The radon decay products may lodge in the lungs and bombard them with alpha and beta particles, thus increasing the risk of lung cancer.
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