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Reinhardt's conjecture: the smoothed octagon has the lowest maximum packing density of all centrally-symmetric convex plane sets [49] Sphere packing problems, including the density of the densest packing in dimensions other than 1, 2, 3, 8 and 24, and its asymptotic behavior for high dimensions.
The verge became the standard escapement used in all other early clocks and watches, and remained the only known escapement for 400 years. Its performance was limited by friction and recoil, but most importantly, the early balance wheels used in verge escapements, known as the foliot , lacked a balance spring and thus had no natural "beat ...
The Pearson correlation is defined only if both standard deviations are finite and positive. An alternative formula purely in terms of ... Fraction of variance ...
The base-2 numeral system is a positional notation with a radix of 2.Each digit is referred to as a bit, or binary digit.Because of its straightforward implementation in digital electronic circuitry using logic gates, the binary system is used by almost all modern computers and computer-based devices, as a preferred system of use, over various other human techniques of communication, because ...
When compared to other energy sources, nuclear power has one of the lowest death rates per unit of energy produced – 0.07 per TWh, as compared to over 32 per TWh in case of brown coal. [61] This figure is driven by a 2005 WHO projection of up to 4000 stochastic cancer deaths that could result from the Chernobyl disaster. [ 62 ]
In terms of the social wage, by 1968, spending on health had gone up by 47%, education by 47%, public sector housing by 63%, and the social security budget by 58%. [40] During the six years of the first Wilson government, spending on social services rose much faster than real personal incomes, and from 1964 to 1969, spending on social services ...
It was the 4th lowest GDP per capita (PPP) of the eurozone out of 19 members, and the 8th lowest of the European Union out of 27 member-states, [81] with several former economically disadvantaged Communist Bloc countries which in the meanwhile had become Eastern European member-states of the EU, nearly reaching or surpassing Portugal in terms ...