telegraphic equation
1Invention of radio — Great Radio Controversy redirects here. For the album by the band Tesla, see The Great Radio Controversy. Contents 1 Physics of wireless signalling 2 Theory of electromagnetism …
2Cable theory — Classical cable theory describes the development of mathematical models that can calculate the flow of electric current (and accompanying voltage) along passive ref|classical neuronal fibers (neurites) particularly dendrites that receive synaptic …
3Time signal — These automatic signal clocks were synchronized by telegraphy in 1905 before the widespread use of radio A time signal is a visible, audible, mechanical, or electronic signal used as a reference to determine the time of day. Contents 1 Audible… …
4Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …
5Loading coil — In electronics, a loading coil or load coil is a coil (inductor) that does not provide coupling to any other circuit, but is inserted in a circuit to increase its inductance. The need was discovered by Oliver Heaviside in studying the… …
6electromagnetic radiation — Physics. radiation consisting of electromagnetic waves, including radio waves, infrared, visible light, ultraviolet, x rays, and gamma rays. [1950 55] * * * Energy propagated through free space or through a material medium in the form of… …
7Antisemitism — Part of a series on Discrimination General forms …
8Oceanography — For the scientific journal, see Oceanography (journal). Thermohaline circulation Oceanography (compound of the Greek words ωκεανός meaning ocean and γράφω meaning to write ), also called oceanology or marine science, is the branch of Earth… …
9Multiple sclerosis — Classification and external resources Demyelination by MS. The CD68 colored tissue shows several macrophages in the area of the lesion. Original scale 1:100 ICD …
10List of company name etymologies — This is a list of company names with their name origins explained. Some origins are disputed. NOTOC #*20th Century Fox – Film studio; formed in 1935 through the merger of William Fox s Fox Film, and Twentieth Century Pictures. [… …
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