deflection tube
81Flyback transformer — A flyback or line output transformer (FBT or LOPT) is a type of transformer used in the power supply of a cathode ray tube that generates the high voltage needed to drive a CRT type monitor, and can also be used to power a plasma globe. It… …
82History of electromagnetism — The history of electromagnetism, that is the human understanding and recorded use of electromagnetic forces, dates back over two thousand years ago, see Timeline of electromagnetism. The ancients must have been acquainted with the effects of… …
83Mellon optical memory — was an early form of computer memory invented at the Mellon Institute in the 1950s. The device used a combination of photoemissive and phosphorescent materials to produce a light loop between two surfaces. The presence or lack of light, detected… …
84Electron — For other uses, see Electron (disambiguation). Electron Experiments with a Crookes tube first demonstrated the particle nature of electrons. In this illustration, the profile of the cross shaped target is projected against the tube face at right… …
85RGB color model — RGB redirects here. For other uses, see RGB (disambiguation). A representation of additive color mixing. Projection of primary color lights on a screen shows secondary colors where two overlap; the combination of all three of red, green, and blue …
86Inkjet printer — Inkjet printers operate by propelling variably sized droplets of liquid or molten material (ink) onto almost any sized page. They are the most common type of computer printer for the general consumerFact|date=November 2007 due to their low cost,… …
87Magnet — This article is about objects and devices that produce magnetic fields. For a description of magnetic materials, see magnetism. For other uses, see Magnet (disambiguation) …
88Streak camera — A streak camera is an instrument for measuring the variation in a pulse of light s intensity with time. They are used to measure the pulse duration of some ultrafast laser systems, and for applications such as time resolved spectroscopy and LIDAR …
896SN7 — is a dual triode vacuum tube, on an 8 pin octal base. Although the 6S series tubes are often metal cased, the 6SN7 is generally found only in a glass GT size envelope. The 6SN7 is basically two 6J5 triodes in one glass envelope.HistoryOriginally… …
90Indian Head test card — The Indian Head Test Card was a black and white television test pattern which was introduced in 1939 by RCA of Harrison, New Jersey as a part of the RCA TK 1 Monoscope. 20th century television later became so important socially that this purely… …
