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What You Didn’t Know About Skin Care Products & Why We Measure Everything

Something You Should Know

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What Is a Kilogram?

The kilogram used to be based on a physical standard. It was created along with the meter and other units in the metric system during the French Revolution. The most recent one, which is known as the International Prototype Kilogram, was losing weight by 50 micrograms - about the weight of a single eyelash. So, what they did is that they redefined the unit. They moved it to this sort of definition based on the speed of light.

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