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How do you make a kilogram? Gravity can provide new answers
Claus Lämmerzahl, Professor of Gravitational Physics at the University of Bremen, and Dr. Sebastian Ulbricht, scientist at ...
BBC
2 个月
Mass and weight
This means that for each kg of mass, an object will experience 9.8 N of force. Where there is a weaker gravitational field, the weight of an object is smaller. For example, the gravitational field ...
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