Quote:
Originally Posted by jamesqf
Quote:
Originally Posted by Piwoslaw
In order to continue this discussion we must all understand the 3 main differences between imperial and metric systems:
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The metric system irrationally defines some units in terms of other units to which they are unrelated. As for instance the gram being the mass of one cc of water. Why water rather than mercury or hydrogen? Purely arbitrary. |
No, not arbitrary. The other obvious choice would be invar, but they went with water because, if you don't have any around handy, you are not worried about measurements.