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The Roberval balance is presented to the French Academy of Sciences by the French mathematician Gilles Personne de Roberval in 1669. The Roberval balance is a weighing scale with two horizontal beams one above the other connected to two vertical beams supporting the weights to be compared. Because the beams form a parallelogram, no matter where the weight is placed in the plates the balance works properly, compared to a simple beam scale which is sensitive to where the weights are placed in the plate To watch and comment new video before others and support my channel, please join the perpetual project: #veproject1
