Jean Bernard Leon Foucault (1819-1868), French physicist, 19th century. Creator: Unknown.

Jean Bernard Leon Foucault (1819-1868), French physicist, 19th century. Creator: Unknown.

1-158-065 - Oxford Science Archive/Heritage Images

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Jean Bernard Leon Foucault (1819-1868), French physicist, 19th century. Known especially for his research on the speed of light, he also improved astronomical instruments, especially the telescope. In 1852 he invented the gyroscope; and investigated the eddy current (known also as the Foucault current).

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