This is not a toy: a LEGO tabletop watt balance (Part 1 of 2) from definition of work physics Watch Video
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Description: This video introduces a do-it-yourself “tabletop” watt balance, built by researchers at the National Institute of Standards and Technology, who also built the NIST 4 watt balance. nnHere the researchers themselves explain the principles and design highlights of both watt balances. The tabletop watt balance can measure mass to about 1% precision and costs about $400. It is made from standard LEGO pieces and a few electronics. The NIST 4 watt balance is about a million times more precise and n
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