Nikola Tesla, with Roger Boskovich's book, “Theoria Philosophiae Naturalis,” in front of the spiral coil of his high-frequency transformer at East Houston St. 46, New York.
Nikola Tesla, with Roger Boskovich's book, “Theoria Philosophiae Naturalis,” in front of the spiral coil of his high-frequency transformer at East Houston St. 46, New York.
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