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23 小時前 · Non-binary and genderqueer are umbrella terms for gender identities that are not solely male or female (identities outside the gender binary). Non-binary identities often fall under the transgender umbrella since non-binary people typically identify with a gender that is different from the sex assigned to them at birth, though some non-binary people do not consider themselves transgender.
4 天前 · ISO 3166-1 ( Codes for the representation of names of countries and their subdivisions – Part 1: Country codes) is a standard defining codes for the names of countries, dependent territories, and special areas of geographical interest. It is the first part of the ISO 3166 standard published by the International Organization for Standardization .
4 天前 · Canonical commutation rule for position q and momentum p variables of a particle, 1927. pq − qp = h / (2 πi ). Uncertainty principle of Heisenberg, 1927. The uncertainty principle, also known as Heisenberg's indeterminacy principle, is a fundamental concept in quantum mechanics. It states that there is a limit to the precision with which ...
1 天前 · Sherlock is a British mystery crime drama television series based on Sir Arthur Conan Doyle 's Sherlock Holmes detective stories. Created by Steven Moffat and Mark Gatiss, the show stars Benedict Cumberbatch as Sherlock Holmes and Martin Freeman as Doctor John Watson. Thirteen episodes have been produced, with four three-part series airing from ...
5 天前 · The Greek alphabet has been used to write the Greek language since the late 9th or early 8th century BC. It is derived from the earlier Phoenician alphabet, and was the earliest known alphabetic script to have distinct letters for vowels as well as consonants.In Archaic and early Classical times, the Greek alphabet existed in many local variants, but, by the end of the 4th century BC, the ...
1 天前 · Royal Mint Isaac Newton in old age in 1712, portrait by Sir James Thornhill In the 1690s, Newton wrote a number of religious tracts dealing with the literal and symbolic interpretation of the Bible. A manuscript Newton sent to John Locke in which he disputed the fidelity of 1 John 5:7—the Johannine Comma—and its fidelity to the original manuscripts of the New Testament, remained ...
1 天前 · The number π (/ p aɪ /; spelled out as "pi") is a mathematical constant that is the ratio of a circle's circumference to its diameter, approximately equal to 3.14159.The number π appears in many formulae across mathematics and physics.It is an irrational number, meaning that it cannot be expressed exactly as a ratio of two integers, although fractions such as are commonly used to ...
