Wireless power transferWireless power transfer (WPT), wireless power transmission, wireless energy transmission (WET), or electromagnetic power transfer is the transmission of electrical energy without wires as a physical link. In a wireless power transmission system, an electrically powered transmitter device generates a time-varying electromagnetic field that transmits power across space to a receiver device; the receiver device extracts power from the field and supplies it to an electrical load.
Homopolar generatorA homopolar generator is a DC electrical generator comprising an electrically conductive disc or cylinder rotating in a plane perpendicular to a uniform static magnetic field. A potential difference is created between the center of the disc and the rim (or ends of the cylinder) with an electrical polarity that depends on the direction of rotation and the orientation of the field. It is also known as a unipolar generator, acyclic generator, disk dynamo, or Faraday disc.
AC motorAn AC motor is an electric motor driven by an alternating current (AC). The AC motor commonly consists of two basic parts, an outside stator having coils supplied with alternating current to produce a rotating magnetic field, and an inside rotor attached to the output shaft producing a second rotating magnetic field. The rotor magnetic field may be produced by permanent magnets, reluctance saliency, or DC or AC electrical windings.
Crookes tubeA Crookes tube (also Crookes–Hittorf tube) is an early experimental electrical discharge tube, with partial vacuum, invented by English physicist William Crookes and others around 1869-1875, in which cathode rays, streams of electrons, were discovered. Developed from the earlier Geissler tube, the Crookes tube consists of a partially evacuated glass bulb of various shapes, with two metal electrodes, the cathode and the anode, one at either end.
Wardenclyffe TowerWardenclyffe Tower (1901–1917), also known as the Tesla Tower, was an early experimental wireless transmission station designed and built by Nikola Tesla on Long Island in 1901–1902, located in the village of Shoreham, New York. Tesla intended to transmit messages, telephony, and even facsimile images across the Atlantic Ocean to England and to ships at sea based on his theories of using the Earth to conduct the signals.
KarlovacKarlovac (kâːrloʋats) is a city in central Croatia. According to the 2021 census, its population was 49.377. Karlovac is the administrative centre of Karlovac County. The city is located on the Zagreb-Rijeka highway and railway line, south-west of Zagreb and from Rijeka. The city was named after its founder, Charles II, Archduke of Austria. The German name Karlstadt or Carlstadt ("Charlestown") has the equivalence in various languages: in Hungarian it is known as Károlyváros, in Italian as Carlovizza, in Latin as Carolostadium, and in Kajkavian dialect and Slovene as Karlovec.
Mihajlo PupinMihajlo Idvorski Pupin (Михајло Идворски Пупин, miˈxǎjlo ˈîdʋoɾski ˈpǔpin; 4 October 1858 – 12 March 1935), also known as Michael Pupin, was a Serbian physicist, physical chemist and philanthropist based in the United States. Pupin is best known for his numerous patents, including a means of greatly extending the range of long-distance telephone communication by placing loading coils (of wire) at predetermined intervals along the transmitting wire (known as "pupinization").
