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The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. [5] [6] [7] The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; [8] the pattern of position detection was found and determined by applying the least-used ratio (1:1:3 ...
An 11-year sunspot cycle is half of a 22-year Babcock–Leighton dynamo cycle, which corresponds to an oscillatory exchange of energy between toroidal and poloidal solar magnetic fields. At solar-cycle maximum, the external poloidal dipolar magnetic field is near its dynamo-cycle minimum strength; but an internal toroidal quadrupolar field ...
Bermuda (/ b ər ˈ m j uː d ə /; historically known as the Bermudas or Somers Isles) is a West Indian British Overseas Territory in the North Atlantic Ocean.The closest land outside the territory is in the American state of North Carolina, about 1,035 km (643 mi) to the west-northwest.
Compton's by Britannica, first published in 2007, incorporating the former Compton's Encyclopedia, is aimed at 10- to 17-year-olds and consists of 26 volumes and 11,000 pages. [35] Since 1938, Encyclopædia Britannica, Inc. has published annually a Book of the Year covering the past year's events.
9-year WMAP image of the cosmic microwave background radiation (2012). [48] [49] The radiation is isotropic to roughly one part in 100,000. [50] About 370,000 years after the Big Bang, two connected events occurred: the ending of recombination and photon decoupling. Recombination describes the ionized particles combining to form the first ...
Existing laws banning abortion except for medical reasons were strictly enforced by the Nazi regime. The number of abortions declined from 35,000 per year at the start of the 1930s to fewer than 2,000 per year at the end of the decade, though in 1935 a law was passed allowing abortions for eugenics reasons. [374]
Parliament passed the European Communities Act later that year [24] and the UK joined Denmark and the Republic of Ireland in becoming a member on 1 January 1973, without referendum. [25] During the 1970s and 1980s, the Labour Party was the more Eurosceptic of the two major parties, and the Conservatives the more Europhile.
Ammonia is an inorganic chemical compound of nitrogen and hydrogen with the formula N H 3.A stable binary hydride and the simplest pnictogen hydride, ammonia is a colourless gas with a distinctive pungent smell.