velocity-modulated tube
41Rectifier — A rectifier is an electrical device that converts alternating current (AC) to direct current (DC), a process known as rectification. Rectifiers have many uses including as components of power supplies and as detectors of radio signals. Rectifiers …
42Nervous system — Nerve redirects here. For other uses, see Nerve (disambiguation). This article is about the nervous system. For parts of the nervous system commonly called nerves, see Peripheral nerve. Nervous system The Human N …
43vacuum technology — Introduction all processes and physical measurements carried out under conditions of below normal atmospheric pressure. A process or physical measurement is generally performed in a vacuum for one of the following reasons: (1) to remove the …
44Moog synthesizer — Moog synthesizers in 2007 …
45Ice sheet dynamics — describe the motion within large bodies of ice, such those currently on Greenland and Antarctica. Ice motion is dominated by the movement of glaciers, whose gravity driven activity is controlled by two main variable factors: the temperature and… …
46Electronic music — For electronic musical instruments, see Electronic musical instrument. For other uses, see Electronic music (disambiguation). See also: List of electronic music genres and List of electronic music festivals Electronic music is music that… …
47Human voice — Voice redirects here. For other uses, see Voice (disambiguation). The spectrogram of the human voice reveals its rich harmonic content. The human voice consists of sound made by a human being using the vocal folds for talking, singing, laughing …
48All in the wind — Wind Wind (w[i^]nd, in poetry and singing often w[imac]nd; 277), n. [AS. wind; akin to OS., OFries., D., & G. wind, OHG. wint, Dan. & Sw. vind, Icel. vindr, Goth winds, W. gwynt, L. ventus, Skr. v[=a]ta (cf. Gr. ah ths a blast, gale, ah^nai to… …
49Before the wind — Wind Wind (w[i^]nd, in poetry and singing often w[imac]nd; 277), n. [AS. wind; akin to OS., OFries., D., & G. wind, OHG. wint, Dan. & Sw. vind, Icel. vindr, Goth winds, W. gwynt, L. ventus, Skr. v[=a]ta (cf. Gr. ah ths a blast, gale, ah^nai to… …
50Between wind and water — Wind Wind (w[i^]nd, in poetry and singing often w[imac]nd; 277), n. [AS. wind; akin to OS., OFries., D., & G. wind, OHG. wint, Dan. & Sw. vind, Icel. vindr, Goth winds, W. gwynt, L. ventus, Skr. v[=a]ta (cf. Gr. ah ths a blast, gale, ah^nai to… …
