Leon Foucault " Foucault Pendulum" Signed Very Rare 1852 Letter
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Leon Foucault " Foucault Pendulum" Signed Very Rare 1852 Letter:
Leon Foucault 1819 - 1868. French physicist known for the "Foucault Pendulum" a devise demonstrating the effect of the Earth rotation. 1852 letter from the archive of Francesco Zantedeschi, Italian priest and physicist. Foucault agrees to meet Zantedeschi in Paris, apologising for not speaking any Italian. Very rare letter. Good condition.
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