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A "Half-Life" is not half of a life, it is half of the life, then half of that life, and then half of THAT life, and so on and so on. For example:

Rock has a half life of 100 ---> 50 ---> 25 ---> 12.5 ---> 6.25 ---> and so on. You just keep dividing the life it has, by 2.

Another Example:

If you take a dissolving vitamin, and weigh it (20g), and put it in water for 1 minute, it should dissolve into ALMOST half of its original weight, into 10g.

Scientists often use the method of "Half-Life" to measure the age of a rock or rock formation.

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9mo ago

The half-life of a pill refers to the time it takes for half of the drug to be removed from the body. It gives an indication of how long the medication will remain active in the body. Pharmacokinetics studies how drugs are absorbed, distributed, metabolized, and excreted by the body.

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Q: What does half life of a pill mean?
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