Tesla 2 phase AC electric motor by Max Kohl. Very early demonstration model of Tesla two phase electric alternating current motor by Max Kohl circa 1900 in good working order. 5½" (14 cm) x 3½" (8.5 cm) height 8" (20 cm) Examples of Tesla alternating current motors as early as this example are extremely rare.
Tesla's Deathray "will send concentrated beams of particles through the free air, of such tremendous energy that they will bring down a fleet of 10,000 enemy airplanes at a distance of 250 miles from the defending nation's border and will cause armies of millions to drop dead in their tracks"
Mark Twain in Nikola Tesla's apartment, New York 1894 The high-voltage current is being passed through the human body to bring the lamp to incandescence. Tesla's friend, Mark Twain, is holding the loop above the resonating coil. Tesla is in the background. Originally published as part of an article by T.C. Martin called "Tesla's Oscillator and Other Inventions" that appeared in the Century Magazine (April 1895)