Scientific American - Page 2

Long distance wireless telegraphy, if we may believe the current story of its latest developments, is about to take an enormous stride both in its reach and its rapidity, for we are shortly to be in...

It can be taken as a fact, which the theory of the action of the eye implies, that for each external impression, that is, for each image produced on the retina, the ends of the visual nerves concerned...

A Coil With a Seven-Foot Spark Gap The great Tesla apparatus of our physical laboratory, at the College of the Immaculate Conception, Montreal, was designed by my predecessor, Father Gendreau, and was...

Invention Contest - First Prize Article "Five-and-twenty years ago is a hundred years off - so much has our social life changed in those five lusters." - Thackeray in "The Newcomes." No single...

Can the Free Energy of Space be Utilized? In a few centuries the world's coal mines will be exhausted. Whence shall we derive the energy to turn the wheels of industry? By harnessing nature, is the...

At the meeting of the American Institute of Electrical Engineers Mr. Tesla employed a machine having 400 poles, which, when run at full speed, enabled him to obtain 20,000 alternations per second. He...

An Autobiographical Sketch I am glad to be accorded this opportunity for two reasons. In the first place I have long since desired to express my great appreciation of the Scientific American and to...

Nikola Tesla, the father of today's AC electrical system and other key inventions, often failed to bring his visionary ideas to real-world fruition When members of the Chicago Commercial Club arrived...

Editor, Scientific American: Engineers attach no importance whatever to static electricity generated by belt friction or otherwise. They are apt to dismiss it with the thought that the energy is...

The knowledge of static electricity dates back to the earliest dawn of civilization but for ages it remained merely an interesting and mystifying phenomenon. Virtually nothing was done towards the...