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KERMA |
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KERMA, 1 abbreviation for kinetic energy released in the medium, a quantity that describes the transfer of energy from a photon to a medium as the ratio of energy transferred per unit mass at each point of interaction. 2 abbreviation for kinetic energy released in matter, a unit of quantity referring to the kinetic energy transferred from photons to charged particles, such as electrons in Compton interactions, per unit mass. The SI unit for the KERMA is the gray, and the special unit is the rad. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| 1300-1897; The Ancient Nubian City of Kerma, 2500-1500 B. The Wide-Angle Free-Air Chamber (WAFAC) is specially designed to realize air kerma from a single-seed source emitting photons with energies up to about 40 keV, and is now used to measure the wide variety of seeds used in prostate-cancer therapy that has appeared in the last few years. Even when Nubians were in power as in the case of Kerma, of Dynasty XXV, or in Meroitic times slavery continued. |
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