(make specified noise)
61Vorbis — This article is about the audio compression codec. For the Discworld character, see Discworld characters. Vorbis Xiph.org Logo Filename extension .ogg .oga …
62The Idler (1758–1760) — This article is about the 18th century series of essays. For other publications called The Idler, see The Idler (disambiguation). The Idler was a series of 103 essays, all but twelve of them by Samuel Johnson, published in the London weekly the… …
63List of Chinese inventions — A bronze Chinese crossbow mechanism with a buttplate (the wooden components have …
64Europe, history of — Introduction history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… …
65Genetic code — A series of codons in part of a messenger RNA (mRNA) molecule. Each codon consists of three nucleotides, usually representing a single amino acid. The nucleotides are abbreviated with the letters A, U, G and C. This is mRNA, which uses U (uracil) …
66Midland Metro — Overview Type Tram/light rail[1] Status active …
67Delta-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… …
68Valve audio amplifier - technical — Circuitry and performance Characteristics of valves Valves are very high input impedance (near infinite in most circuits) and high output impedance devices. They are also high voltage / low current devices.While valves themselves are described… …
69metaphysics — /met euh fiz iks/, n. (used with a sing. v.) 1. the branch of philosophy that treats of first principles, includes ontology and cosmology, and is intimately connected with epistemology. 2. philosophy, esp. in its more abstruse branches. 3. the… …
70flight, history of — ▪ aviation Introduction development of heavier than air flying machines. Important landmarks and events along the way to the invention of the airplane include an understanding of the dynamic reaction of lifting surfaces (or wings), building… …
