Here is a documentary on the life of Nikola Tesla
Some Electromechanical devices and principles developed by Tesla:
* various devices that use rotating magnetic fields (1882)
* induction motor and high frequency alternator
* means for increasing the intensity of electrical oscillations
* alternating current long-distance electrical transmission system (1888)
* Tesla coil
* bladeless turbine
* bifilar coil
* Telegeodynamics
* systems for wireless communication (prior art for the invention of radio) and radio frequency oscillators
* robotics and the "AND" logic gate
* X-rays Tubes using the bremsstrahlung process
* devices for ionized gases
* devices for high field emission
* devices for charged particle beams
* methods for providing extremely low level of resistance to the passage of electrical current
* voltage multiplication circuitry
* devices for high voltage discharges
* devices for lightning protection
* Magnifying Transmitter
* VTOL aircraft
* Dynamic theory of gravity
* concepts for electric vehicles