Nikola Tesla - Columbus Egg - 1893 Chicago

Beautiful rotating magnetic field. I think about rotating electric field just now, with high voltage. Air can rotate and flying machine will be possible. My web pages: "Nikola Tesla and My Thoughts" (google it) has lot of interesting ideas like Tesla's combustion engine, Energy of space, Flying machine, Magnetic linear movement, Plasma on aluminum in water, Quantization of gravitation, Tesla's energy transmitter, Tesla's style windmill and other interesting stuff.

just the job, wish i had one.. what it for?

and what is the use of that invention?

tesla probably had one

To show the principles of the rotating magnetic field and the induction motor.

It was a joke, it's obvious it has an use, even though minds like the mine can't understand :)

I wish to have something lika that at home.

did you guys ever hear the story tesla told about this, it was like how do you get a egg to spin on its end, and no one could figure it out, so tesla introduced the egg of columbus and impressed a ton of people!

Tesla was the greatest man ever

It's a 3 phase motor which creates a spinning magnetic field. This moving field induces eddy currents in the object that drags it around with the field (slightly slower actually).

It's exactly the same principle as induction motors, which Tesla invented.