Scientific American Supplement

The Reichsgericht , of Germany, has confirmed the decision of the lower courts declaring the Tesla polyphase motor patents invalid. The court reviewing the case holds that the patents are void, owing...

It was not to be expected that in the short evening at his disposal, and with such a host of experiments to be performed, Mr. Nikola Tesla could do more than indicate, merely, the kind of way in which...

Toward the close of 1898 a systematic research, carried on for a number of years with the object of perfecting a method of transmission of electrical energy through the natural medium, led me to...

From a paper read before the recent meeting of the American Institute of Electrical Engineers, New York, and reported in the Electrical World . The actions produced and producible by the agency of...