"Tesla Maps Our Electrical Future", by H. Winfield Secor for Science and Invention 17 Nr.12 (Apr 1930) 1077, 1124-1126
Double Cone Bipolar Coil
This double cone bipolar coil was made by Nikola Tesla, confiscated by FBI after his death, and purchased from an estate auction through eBay. Click on the photo for more details.
Order our unique periodic table posters from Zazzle. Click on the images. Also available are mouse pads, belt buckles, mugs, and t-shirts.