radioactive decay also known as nuclear decay radioactivity or nuclear radiation is the process by which an unstable atomic nucleus loses energy in terms of mass in its rest frame by emitting radiation such as an alpha particle beta particle with neutrino or only a neutrino in the case of electron capture or a gamma ray or electron in the case of.
radiocarbon dating is a technique used by scientists to learn the ages of biological specimens for example wooden archaeological artifacts or ancient human remains from the distant past.
The older a sample of a radioactive material the less radioactive it is the decrease in radioactivity follows a characteristic pattern shown in the graph or decay curve the y axis can represent the radioisotope left or the measured radioactivity.
Looking at the table we can draw some conclusions as to what planet properties will determine the type of planet surfacing that can occur impact cratering can occur on any object with a solid surface at any time.
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Professional geologist tom bailleul takes a second look at gentrys claimed polonium haloes arguing that there is no good evidence they are the result of polonium decay as opposed to any other radioactive isotope or even that they are caused by radioactivity at all gentry is taken to task for selective use of evidence faulty experiment design.
What is phet founded in 2002 by nobel laureate carl wieman the phet interactive simulations project at the university of colorado boulder creates free interactive math and science simulations.
Radiometric dating he question of the ages of the earth and its rock formations and features has fascinated philosophers theologians and scientists for centuries primarily because the answers put our lives in temporal perspective.
cesium137 a deadly hazard colin wessells march 20 2012 submitted as coursework for ph241 stanford university winter 2012 introduction among the many fission product nuclides cesium 137 deserves attention because it possesses a unique combination of physical properties and historical notoriety.