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Pierre Marie Augustin Charpentier(1852-1916) was a French physician.
In 1891 he carried out the first experiments providing evidence of the size-weight illusion. It s also known as the Charpentier illusion He carried out a various number of procedures comparing what people thought was the heaviness of lifted weights. He realized that lifters thought that larger objects were lighter than smaller objects of the same mass.
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