spark plug heat value
41Electrochemistry — is a branch of chemistry that studies chemical reactions which take place in a solution at the interface of an electron conductor (a metal or a semiconductor) and an ionic conductor (the electrolyte), and which involve electron transfer between… …
42Tap and die — Not to be confused with Tool and die. Taps and dies are cutting tools used to create screw threads, which is called threading. A tap is used to cut the female portion of the mating pair (e.g., a nut). A die is used to cut the male portion of the… …
43Smart power grid — Smart Grid is a transformed electricity transmission and distribution network or grid that uses robust two way communications, advanced sensors, and distributed computers to improve the efficiency, reliability and safety of power delivery and use …
44Italy — /it l ee/, n. a republic in S Europe, comprising a peninsula S of the Alps, and Sicily, Sardinia, Elba, and other smaller islands: a kingdom 1870 1946. 57,534,088; 116,294 sq. mi. (301,200 sq. km). Cap.: Rome. Italian, Italia. * * * Italy… …
45Roman infantry tactics — refers to the theoretical and historical deployment, formation and maneuvers of the Roman infantry from the start of the Roman Republic to the fall of the Western Roman Empire. The article first presents a short overview of Roman training. Roman… …
46Criticism of ESPN — While ESPN is one of the most successful sports networks, it has not been free from criticism. This criticism includes accusations of biased coverage, conflict of interest, and controversies with individual broadcasters and analysts. Mike Freeman …
47Radio-controlled aircraft — A radio controlled aircraft (often called RC aircraft or RC plane) is a model aircraft that is controlled remotely, typically with a hand held transmitter and a receiver within the craft. The receiver controls the corresponding servos that move… …
48List of Chinese inventions — A bronze Chinese crossbow mechanism with a buttplate (the wooden components have …
49Edinburgh — /ed n berr euh, bur euh/ or, esp. Brit., / breuh/, n. 1. Duke of. See Philip (def. 4). 2. a city in and the capital of Scotland, in the SE part: administrative center of the Lothian region. 470,085. * * * I City and council area (pop., 2001:… …
50Electric double-layer capacitor — Maxwell Technologies MC and BC series supercapacitors (up to 3000 farad capacitance) An electric double layer capacitor (EDLC), also known as supercapacitor, supercondenser, electrochemical double layer capacitor, or ultracapacitor, is an… …
