pulse-frequency spectrum
61Composite video — Not to be confused with Component video. Composite video On consumer products a yellow RCA connector is typically used for composite video. Type Analog video connector …
62Delay encoding — In telecommunications, delay encoding is the encoding of binary data to form a two level signal such that (a) a 0 causes no change of signal level unless it is followed by another 0 in which case a transition to the other level takes place at the …
63Johnson–Nyquist noise — (thermal noise, Johnson noise, or Nyquist noise) is the electronic noise generated by the thermal agitation of the charge carriers (usually the electrons) inside an electrical conductor at equilibrium, which happens regardless of any applied… …
64Free induction decay — In Fourier Transform NMR, a free induction decay (FID) is the observable NMR signal generated by non equilibrium nuclear spin magnetisation precessing about the magnetic field (conventionally along z).This non equilibrium magnetisation is… …
65Combined oral contraceptive pill — (COCP) Background Birth control type Hormonal First use ? …
66Magic angle spinning — Magic angle spinning: The sample (blue) is rotating with high frequency inside the main magnetic field (B0). The axis of rotation is tilted by the magic angle θm with respect to the direction of B0. In nuclear magnetic resonance, magic angle… …
67Audio power — Sound measurements Sound pressure p, SPL Particle velocity v, SVL Particle displacement ξ Sound intensity I, SIL Sound power Pac Sound power level SWL Sound energy Sound energy density …
68Bioacoustics — is a cross disciplinary science that combines biology and acoustics. Usually it refers to the investigation of sound production, dispersion through elastic media, and reception in animals, including humans. This involves neurophysiological and… …
69Timeline of radio — The timeline of radio lists within the history of radio, the technology and events that produced instruments that use radio waves and activities that people undertook. Later, the history is dominated by programming and contents, which is closer… …
70JY-9 Radar — Infobox Radar name = JY 9 caption = JY 9 country = People s Republic of China introdate = unknown number = unknown type = Fire Control frequency = S band PRF = 790 Hz Pulsewidth = 20 μs RPM = 6, 12 rpm range = 150 km (Pd=80%; Swerling I; 2 m²)… …
