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Dating schemes based on rates of radioactivity have been refined and scrutinized for several decades.

The latest high-tech equipment permits reliable results to be obtained even with microscopic samples.

If you're like me, you care about the elements and how they go together,… The problem is it's exceedingly rare stuff in the earth's crust, and it's getting harder to find all the time. Mike tells me that each bar represents about a million pounds of rock that had to be moved and processed.

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The unusually low energy released in the tritium beta decay makes the decay (along with that of rhenium-187) appropriate for absolute neutrino mass measurements in the laboratory (the most recent experiment being KATRIN).This curriculum includes topics such as matter, atomic theory, the periodic table of the elements, bonding, chemical equations, chemical bonding, stoichiometry, gas laws, acids, bases, and salts, reaction rates, thermonuclear and nuclear chemistry, and equilibrium.



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