English Mechanic and World of Science

[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...

[33984.] — While experimenting with an induction coil some time ago; I succeeded in producing an effect which I have never seen described, and if it be a real novelty, will probably be interesting to...

This article is a reprint of Electrical Engineer of January 3, 1894 and is intentionally not duplicated here.

To Mr. Bottone. — This is practically a transformer, which can be used either as a "step up" or step down," according to whether you connect the primary or secondary to the terminals of your spark...

By EDWIN J. HOUSTON, Ph.D., and A. E. KENNELLY, Sc.D. The announcement of a scientific discovery has seldom produced so intense an excitement throughout the civilised world as has that made in...

I don't know enough about Tesla transformers to answer the first part of the question; but alternating current can be transformed with very slight loss, either up or down, by suitable transformers...

[90061.] — Coil: Tesla and Skiagraphs. — To MR. BOTTONE. — I don't think you will improve matters by using a Tesla in conjunction with your coil. The same winding as described would be suitable, in...

This article is a reprint from Electrical World of September 1, 1894 and is intentionally not duplicated here.

Since Mr. Nikola Tesla's first work in alternating current motors was published, he has been busily engaged in working out other types, one of which is described below. In Mr. Tesla's motors, it will...

The cause of the innocuousness of these seems not to have been determined with certainty. If the impulses alternate at the rate of a million per second, it can easily be imagined that one of these...