how is it possible to use carbon dating to determine the age
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how is it possible to use carbon dating to determine the age of a fossil if the among of Carbon-14 has already decayed?How do you know what the initial amount of Carbon 14 was?Show the beta decay of a carbon 14atom.
大意就是 怎么用炭14去确定一块化石的年龄(炭14 已经退变了)你怎么知道原量的炭14是多少?
大意就是 怎么用炭14去确定一块化石的年龄(炭14 已经退变了)你怎么知道原量的炭14是多少?
这里是一个百分比,不可能全部衰变完!通过衰变公式可以算出化石的年龄.
放射性元素的原子核有半数发生衰变时所需要的时间,叫半衰期.
原子核的衰变规律是:N=N0*(1/2)^(t/T) 其中:No是指初始时刻(t=0)时的原子核数 T为衰变时间,t为半衰期 N是衰变后留下的原子核数.
放射性元素的原子核有半数发生衰变时所需要的时间,叫半衰期.
原子核的衰变规律是:N=N0*(1/2)^(t/T) 其中:No是指初始时刻(t=0)时的原子核数 T为衰变时间,t为半衰期 N是衰变后留下的原子核数.
how is it possible to use carbon dating to determine the age
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