employ+battery
51Electric aircraft — Infobox Aviation name = Electric aircraft caption = Helios electric powered UAVAn electric aircraft is an aircraft that runs on electric motors rather than internal combustion engines, with electricity coming from fuel cells, solar cells,… …
52energy conversion — ▪ technology Introduction the transformation of energy from forms provided by nature to forms that can be used by humans. Over the centuries a wide array of devices and systems has been developed for this purpose. Some of these energy …
53Tire-pressure monitoring system — A tire pressure monitoring system (TPMS) is an electronic system designed to monitor the air pressure inside the pneumatic tires on various types of vehicles. The system is also sometimes referred to as a tire pressure indication system (TPIS).… …
54Submarine — For other uses, see Submarine (disambiguation). A Japan Maritime Self Defense Force Oyashio class submarine in 2006 A submarine is a watercraft capable of independent operation below the surface of the water. It differs from a submersible, which… …
55HMS Triumph (1903) — For other ships of the same name, see HMS Triumph. HMS Triumph Career (United Kingdom) …
56Wireless energy transfer — or wireless power is the transmission of electrical energy from a power source to an electrical load without artificial interconnecting conductors. Wireless transmission is useful in cases where interconnecting wires are inconvenient, hazardous,… …
57Solar inverter — Internal view of a solar inverter. A solar inverter or PV inverter is a critical component in a Photovoltaic system. It performs the conversion of the variable DC output of the Photovoltaic (PV) modules into a utility frequency AC current that… …
58PowerBook — The PowerBook is a line of Macintosh laptop computers that was designed, manufactured and sold by Apple Computer, Inc. from 1991 to 2006. During its lifetime, the PowerBook went through several major revisions and redesigns, often being the first …
59Mark Watson (Canadian soccer) — For the English football (soccer) player, see Mark Watson (English footballer). Mark Watson Personal information Full name Mark Stewart Watson Date of birth …
60HMS Swiftsure (1903) — For other ships of the same name, see HMS Swiftsure. HMS Swiftsure Career (United Kingdom) …
