Isotopes

... this is what I think I get so far, its more accurate than relative dating. its used over relative dating more often than not. you use "parent isotopes" like uranium? ok, but what if the uranium somehow gets messed up? how will we know? how can we really know if its accurate at all? its ...

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... I owe you a more detailed description of radioisotope dating. I believe the question you asked was how one can know the original amounts of the isotopes in question. In short, the answer is that some isotopes of certain elements occur naturally, whereas others occur only as part of a decay process; ...

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Radioactive isotopes (such as C14) usually have too many neutrons relative to the number of protons in their nuclei, and so have a hard time holding their nuclear particles together. The rate at which they decay is variable but ...

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... are made of phosphorus? Additional evidence is this passage excerpted from the same book: "They tagged bacteriophages with the radioactive isotopes 32P and 35S. Since proteins contain sulfur but not phosphorous and DNA contains phosphorous but not sulfur, the radioactive 32P labeled the ...

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Cells can also be grown in the presence of other isotopes such as iodine and phosphate. Using isotopes ("hot labelling") is often considered dangerous and are being replaced by "cold labelling" where as Biohazard pointed antigens ...

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