Pretty Sphere
Pretty Sphere
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what would be an advantage of using an atomic based weight standard.?
what would be achieved by using an atomic-based weight standard?
the question is pretty straight forward. just need some pointers.
question relating to the silicon-28 sphere to replace the IPK.
The most obvious advantage would be the independence from any unique physical standard (the kilogram standard, in this case).
Nowadays a kilogram is, by definition, what THAT particular piece of metal weighs. It can't be exactly duplicated. If anything happend to it, the weight (as a quantity mesured) of everything would change (since the standar weighs always 1 kg).
Using the atomic standard, on the other hand, you can always re-elaborate a new (physical) standard to compare and check the current scales, whith the same accuray every time.
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