optical passive component
51Phase-shift keying — Passband modulation v · d · e Analog modulation AM · …
52Repeater — This article is about the electronic device. For other uses, see Repeater (disambiguation). A wireless repeater. A repeater is an electronic device that receives a signal and retransmits it at a higher level and/or higher power, or onto the other …
53atmosphere — atmosphereless, adj. /at meuhs fear /, n., v., atmosphered, atmosphering. n. 1. the gaseous envelope surrounding the earth; the air. 2. this medium at a given place. 3. Astron. the gaseous envelope surrounding a heavenly body. 4. Chem. any… …
543M — For other uses, see 3M (disambiguation). 3M Company Type Public Traded as NYSE: MMM …
55India — /in dee euh/, n. 1. Hindi, Bharat. a republic in S Asia: a union comprising 25 states and 7 union territories; formerly a British colony; gained independence Aug. 15, 1947; became a republic within the Commonwealth of Nations Jan. 26, 1950.… …
56radar — /ray dahr/, n. 1. Electronics. a device for determining the presence and location of an object by measuring the time for the echo of a radio wave to return from it and the direction from which it returns. 2. a means or sense of awareness or… …
57Naval mine — Polish wz. 08/39 contact mine. The protuberances around the top of the mine, called Hertz horns, are part of the detonation mechanism …
58Microphone — For the indie film, see Microphone (film). Microphones redirects here. For the indie band, see The Microphones. A …
59Wireless 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,… …
60Quiet PC — A quiet PC is a personal computer that makes little noise. Common uses for quiet PCs include video editing, sound mixing, home servers, and home theater PCs. A typical quiet PC uses quiet cooling and storage devices and energy efficient… …
