Time, Cratons, and Voyageurs NP
Time, Cratons, and Voyageurs NP
Time, Cratons, and Voyageurs NP
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SpontaneousRadioactiveDecay• Someisotopes(atomswithaparticular#protons<strong>and</strong>#neutrons)areunstable<strong>and</strong>willfallapart.• Exactlywhenanyparticularatomwillundergofissionisunpredictable,butthebehavioroflargenumbersofidenticalatomswillfollowastatisticalpattern,analogoustoflippingcoins.• Thenumberofunstableatoms,called“parents,”willdecreaseinapredictablefashion,producing“daughter”atoms.Theratioofparentstodaughterswillindicatehowmuchtimehaspassed.