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Last edited by a moderator:
Thought as much.
Not to totally derail the thread, but if a naturally occurring form of uranium has a radioactive half life of a billion years - when did that time span start?
 
Thought as much.
Not to totally derail the thread, but if a naturally occurring form of uranium has a radioactive half life of a billion years - when did that time span start?
Doesn't matter when the time span starts. Half life means that half of the substance existing whenever you start paying attention will be gone after one half life.

Brew on :mug:
 
Well, point being, if the uranium existed shortly after the universe happened, wouldn't that be the beginning of its life?
As opposed to when someone stumbled on a deposit within human existence?
I reckon "half life" is indeed an arbitrary time frame term...
 
Thought as much.
Not to totally derail the thread, but if a naturally occurring form of uranium has a radioactive half life of a billion years - when did that time span start?
upload_2019-7-12_16-2-14.jpeg
 
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