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Originally posted by zorgon
Lot of numbers tossed around but what d\are the reading? rad, rem, sieverts, becquerels? Makes a BIG difference ya know
And if these are individuals doing the readings, how do you know he has it calibrated correctly? And if he was living next to me my garage would likely make those readings way off All those betafites I have. I suppose one day I should put them in a lead box
Counts per minute (CPM)
The counts per minute is an aggregate measurement that detects all decay events at a particular point. This could be alpha particles, beta particles or mixed gamma/beta, gamma/alpha, alpha/beta actual decays. This can be used with a conversion factor, knowing the type and composition of materials to convert to Roentgen or Coulomb per kilogram. Counts per minute can be useful when detector efficiency is in question.
Gamma radiation, also known as gamma rays (denoted as γ), is electromagnetic radiation of high frequency (very short wavelength). They are produced by sub-atomic particle interactions such as electron-positron annihilation, neutral pion decay, fusion, fission or inverse Compton scattering in astrophysical processes. Because gamma rays are a form of ionizing radiation, they pose a health hazard.