"On the Source of Roentgen Rays and the Practical Construction and Safe Operation of Lenard Tubes", Electrical Review, New York 31 /.4 (11 August 1897) pp. 67, 71
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.