space-and-time quadrature
21DVB-T2 — List of digital television broadcast standards DVB standards (Europe) DVB S (satellite) DVB S2 DVB T (terrestrial) DVB T2 DVB C …
22List of important publications in mathematics — One of the oldest surviving fragments of Euclid s Elements, found at Oxyrhynchus and dated to circa AD 100. The diagram accompanies Book II, Proposition 5.[1] This is a list of important publications in mathematics, organized by field. Some… …
23Microwave transmission — The atmospheric attenuation of microwaves in dry air with a precipitable water vapor level of 0.001 mm. The downward spikes in the graph correspond to frequencies at which microwaves are absorbed more strongly, such as by oxygen molecules… …
24List of vacuum tubes — This is a list of vacuum tubes or thermionic valves. Before the advent of semiconductor devices, hundreds of tube types were used in consumer and industrial electronics; today only a few types are still used in specialized applications. Contents… …
25How television works — Analog televisionUntil the advent of digital television and flat panel displays in the 1990s, all television was based on the transmission and reception of analog signals, displayed on a cathode ray tube. Although a number of different broadcast… …
26List of Russian mathematicians — Andrey Kolmogorov, a preeminent 20th century mathematician. This list of Russian mathematicians includes the famous mathematicians from the Russian Empire, the Soviet Union and the Russian Federation. This list is incomplete; you can help by …
27Chirality (electromagnetism) — Chirality with hands and two enantiomers of a generic amino acid. The term chiral (pronounced /ˈkaɪrəl/) describes an object, especially a molecule, which has or produces a non superimposeable mirror image of itself. In chemistry, such a …
28GPS signals — Global Positioning System (GPS) satellites broadcast radio signals to enable GPS receivers to determine location and synchronized time. Anatomy of a GPS signal GPS signals include ranging signals, used to measure the distance to the satellite,… …
29Multichannel television sound — Multichannel television sound, better known as MTS (often still as BTSC, for the Broadcast Television Systems Committee that created it), is the method of encoding three additional channels of audio into an NTSC format audio carrier. Contents 1… …
30Oja's rule — Oja s learning rule, or simply Oja s rule, named after a Finnish computer scientist Erkki Oja, is a model of how neurons in the brain or in artificial neural networks change connection strength, or learn, over time. It is a modification of the… …
