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Elusive Quest for One True Kilogram Finally Pays Off
The international system of measurement has a weight problem—and a crystal ball could provide the solution.
The international system of measurement has a weight problem—and a crystal ball could provide the solution.
Source: National Geographic News
Posted on: Thursday, Jul 16, 2015, 10:42am
Views: 3157
Posted on: Thursday, Jul 16, 2015, 10:42am
Views: 3157
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