This video is about making a sphere of solid silicone as a means of establishing the exact weight of a kilogram. Blame Lavoisier. Here in the US, we are stuck with units of measurement, different from most of the rest of the world. It gives us a great excuse to learn fractions.
The Parisian rabble cut off Lavoisier's head during the French revolution. He had been a tax collector as well as the father of modern chemistry, but portions of his laboratory have been preserved in the Museum of Arts and Industries in Paris.
What an interesting video - thanks for sharing!
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