Scientific American

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...

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...

Nikola Tesla was born at the stroke of midnight, July 9-10th, 1856, in Smiljan, Jugoslavia. His father was a distinguished clergyman, and his mother, Georgina Mandic, came from a long line of...

It is a curious fact that, old as fountains are, they have remained essentially unchanged in principle for centuries. Artists have lavished all their skill upon them to make them beautiful, but...

The top half of casings is removed, showing two rotors. Each rotor consists of 25 disks 3/8-inch thick by 18 inch diameter. The steam enters at the periphery, and flows in spiral paths to exhaust at...

Nikola Tesla has given to The New York Sun an authorized statement concerning his new experiments on the production of light without the aid of wires. Mr. Tesla says: “This light is the result of...