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101Song Dynasty — This article is about the Northern and Southern Song Dynasties. For the Southern Dynasty, see Liu Song Dynasty. Song 宋 ← …
102Budapest Gambit — The Budapest Gambit (or Budapest Defence) is a chess opening beginning with the moves:1. :2. It is rarely played in top level chess, but it is occasionally seen at amateur levels. It has two codes in the Encyclopaedia of Chess Openings, A51 (1.d4 …
103Sewage treatment — The objective of sewage treatment is to produce a disposable effluent without causing harm to the surrounding environment, and also prevent pollution.[1] Sewage treatment, or domestic wastewater treatment, is the process of removing contaminants… …
104Star — For other uses, see Star (disambiguation) …
105Bipolar junction transistor — BJT redirects here. For the Japanese language proficiency test, see Business Japanese Proficiency Test. PNP …
106Microphone — For the indie film, see Microphone (film). Microphones redirects here. For the indie band, see The Microphones. A …
107Delta-sigma modulation — Delta sigma (ΔΣ; or sigma delta, ΣΔ) modulation is a method for encoding high resolution or analog signals into lower resolution digital signals. The conversion is done using error feedback, where the difference between the two signals is… …
108star cluster — Astron. a number of stars of common origin held together as a group by gravitational attraction. Cf. globular cluster, open cluster, stellar association. * * * ▪ astronomy Introduction either of two general types of stellar assemblages held… …
109Phase-shift keying — Passband modulation v · d · e Analog modulation AM · …
110Action potential — In physiology, an action potential is a short lasting event in which the electrical membrane potential of a cell rapidly rises and falls, following a consistent trajectory. Action potentials occur in several types of animal cells, called… …
