**2. History**

The idea dates to 1888 in a work by Heinrich Hertz. He was able to demonstrate high frequency power transfer using a spark gap and parabolic reflectors at both the transmitting and receiving ends of the system.

The more famous wireless power transfer experiment was carried out later by Nikola Tesla in 1893 [1, 2]. He spent thousands of dollars and performed public demonstrations of wireless power transfer, which earned him the title of a mad scientist.
