one-pole plug
71Brickyard 400 — Venue Indianapolis Motor Speedway Sponsor Big Machine Records First race 1994 …
72MythBusters (2007 season) — Country of origin Australia United States No. of episodes 25 (includes 4 specials) Broadcast Original channel Discovery Channel …
73LINC — The LINC (Laboratory Instrument Computer) was a 12 bit, 2048 word computer. The LINC can be considered the first minicomputer and a foreruner to the personal computer. [For example see William H. Calvin letter The Missing LINC , BYTE magazine… …
74Newcomen steam engine — Animation of a schematic Newcomen steam engine. – Steam is shown pink and water is blue. – Valves move from open (green) to closed (red) The atmospheric engine invented by Thomas Newcomen in 1712, today referred to as a Newcomen steam engine (or… …
75Circuit breaker — For other uses, see Circuit breaker (disambiguation). An air circuit breaker for low voltage (less than 1000 volts) power distribution switchgear …
76Google Earth — Infobox Software name = Google Earth caption = Screenshot of Google Earth in Windows Vista developer = Google released = mid 2006 latest release version = 4.3.7284.3916 latest release date = release date and age|2008|7|13 programming language =… …
77Digital television transition in the United States — Further information: Digital television transition The DTV (an abbreviation of digital television, also called digital broadcast) transition in the United States was the switchover from analog (the traditional method of transmitting television… …
78Protective relay — See also: Power system protection In electrical engineering, a protective relay is a complex electromechanical apparatus, often with more than one coil, designed to calculate operating conditions on an electrical circuit and trip circuit breakers …
79Power line communication — or power line carrier (PLC), also known as power line digital subscriber line (PDSL), mains communication, power line telecom (PLT), power line networking (PLN), or broadband over power lines (BPL) are systems for carrying data on a conductor… …
80Spark gap — A spark gap consists of an arrangement of two conducting electrodes separated by a gap usually filled with a gas such as air. When a suitable voltage is supplied, a spark forms, ionizing the gas and drastically reducing its electrical resistance …
