Magazine - Page 5

It would be interesting to know who makes the most money from United States patents, the inventors or the lawyers. It seems sometimes as if our patent office methods were arranged for the benefit of...

By E. Raverot The phenomena produced by alternating currents of great frequency and very high potentials were exhibited in public for the first time in France, on Friday, Feb. 19, by the discoverer...

It appears sometimes as though there was an opinion abroad that Americans, though practical, are not patient, scientific investigators. It is true we do not spend our time with such matters as...

[33904.] — I was rather surprised to read under the above heading that Mr. Rossi had discovered the "novelty" of a vacuum tube being lighted by a Rhumkorff coil, without actually being connected with...

On another page we give a brief description of one form of Mr. Tesla's mechanico-electric oscillator, which formed part of his exhibit in Chicago. It would be hardly possible at this moment to foresee...

To those experimenters having only a small spark coil (mine is a 1/4-inch Ford ignition coil) and wishing to produce High Frequency currents, I describe here a coil I made which proved very...

(974) R. Conover, New York, N. Y., inquires of "The Oracle": Q. 1. For data on a Tesla coil suitable for use on a 2-inch spark coil as an exciter. A. 1. The ordinary Tesla coil, especially designed to...

In the action brought by the Westinghouse Electric and Manufacturing Company against the Electric Appliance Company of Chicago to restrain that company from selling or manufacturing the Gutmann...

About three years ago I had the pleasure of bringing to the attention of the American Institute of Electrical Engineers at its annual meeting, certain phenomena of the repulsive action between...

An extraordinary general meeting of the Institution of Electrical Engineers is to be held, by kind permission of the managers, at the Royal Institution, Albemarle-street, on Wednesday, 3rd February...