To better illustrate the underlying concepts and ideas behind his inventions Nikola Tesla often resorted to showmanship. His rotary magnetic field concept was somewhat harder to demonstrate because the magnetic field is not normally visible to a naked eye. Finally, Tesla had a wonderful idea of replacing the rotor of a 2-phase induction motor with a copper egg. The copper egg would rotate in the rotating magnetic field the same way as the rotor would in the induction motor. As the copper egg gained rotational speed, it was lifted on its main axis as the consequence of the gyroscopic effect. Tesla presented the model of his Egg of Columbus in 1893 at the World fair exhibition in Chicago. . Watch full video on YouTube: https://youtu.be/evI1fLYZYDw . Learn more: https://www.rt17.hr/tesla-egg-of-columbus-functional-replicas . #tesla #technology #eggofcolumbus #nikolatesla #invention #rotatingmagneticfield #historical #replica #science #history #sciencemuseum #physics #ellipsoid #scienceiscool #scienceexperiment #physicsfun #magnetic #gyroscopic #ideas #creativity #magneticinduction #magneticfield #coolhistory #electricity #nikolateslamindfromthefuture (at Zagreb, Croatia) https://www.instagram.com/p/Bv9-LzgFMt7/?utm_source=ig_tumblr_share&igshid=19fa7tm3tsck6