optical-to-electric converter
51Electroluminescence — Animation of LCD, both unlit and with electroluminescent backlight switched on …
52De Forest, Lee — born Aug. 26, 1873, Council Bluffs, Iowa, U.S. died June 30, 1961, Hollywood, Calif. U.S. inventor. He had invented many gadgets by age 13, including a working silverplating apparatus. After earning a Ph.D. from Yale University, he founded the De …
535ESS switch — The 5ESS Switch is the Class 5 telephone electronic switching system sold by Alcatel Lucent. This digital central office telephone circuit switching system is used by many telecommunications service providers. HistoryThe 5ESS Class 5 Switch first …
54Diffusion of technology in Canada — This article outlines the history of the diffusion or spread of technology in Canada. Technologies chosen for treatment here include, in rough order, transportation, communication, energy, materials, industry, public works, public services… …
55HDMI — (High Definition Multimedia Interface) …
56Electromagnetism — Electricity · …
57Player piano — The player piano is a self playing piano, containing a pneumatic mechanism that plays on the piano action pre programmed music via perforated paper rolls. The rise of the player piano grew with the rise of the mass produced piano in the house and …
58Lichtwellenleiter — Kunststoff Lichtwellenleiter LWL Patchkabel konfektionier …
59Hall effect — For the Colombian band, see The Hall Effect (band). The Hall effect is the production of a voltage difference (the Hall voltage) across an electrical conductor, transverse to an electric current in the conductor and a magnetic field perpendicular …
60Gamma spectroscopy — The gamma ray spectrum of natural uranium, showing about a dozen discrete lines superimposed on a smooth continuum, allows the identification the nuclides 226Ra, 214Pb, and 214Bi of the uranium decay chain. Gamma ray spectroscopy is the… …
