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  2. Arithmetic - Wikipedia

    en.wikipedia.org/wiki/Arithmetic

    Leibniz's stepped reckoner was the first calculator that could perform all four arithmetic operations. [179] The first mechanical calculators were developed in the 17th century and greatly facilitated complex mathematical calculations, such as Blaise Pascal's calculator and Gottfried Wilhelm Leibniz's stepped reckoner. [180]

  3. Effect size - Wikipedia

    en.wikipedia.org/wiki/Effect_size

    In statistics, an effect size is a value measuring the strength of the relationship between two variables in a population, or a sample-based estimate of that quantity. It can refer to the value of a statistic calculated from a sample of data, the value of one parameter for a hypothetical population, or to the equation that operationalizes how statistics or parameters lead to the effect size ...

  4. National debt of the United States - Wikipedia

    en.wikipedia.org/wiki/National_debt_of_the...

    Mathematically, this is the debt divided by the GDP amount. The Congressional Budget Office includes historical budget and debt tables along with its annual "Budget and Economic Outlook". Debt held by the public as a percentage of GDP rose from 34.7% GDP in 2000 to 40.5% in 2008 and 67.7% in 2011. [ 34 ]

  5. Radian - Wikipedia

    en.wikipedia.org/wiki/Radian

    One radian is defined as the angle at the center of a circle in a plane that subtends an arc whose length equals the radius of the circle. [6] More generally, the magnitude in radians of a subtended angle is equal to the ratio of the arc length to the radius of the circle; that is, =, where θ is the magnitude in radians of the subtended angle, s is arc length, and r is radius.

  6. Isaac Newton - Wikipedia

    en.wikipedia.org/wiki/Isaac_Newton

    Sir Isaac Newton (25 December 1642 – 20 March 1726/27 [a]) was an English polymath active as a mathematician, physicist, astronomer, alchemist, theologian, and author who was described in his time as a natural philosopher. [5]

  7. Titanic - Wikipedia

    en.wikipedia.org/wiki/Titanic

    92 ft 6 in (28.2 m) Height: 175 ft (53.3 m) (keel to top of funnels) Draught: 34 ft 7 in (10.5 m) Depth: 64 ft 6 in (19.7 m) Decks: 9 (A–G) Installed power: 24 double-ended and five single-ended boilers feeding two reciprocating steam engines for the wing propellers, and a low-pressure turbine for the centre propeller; [3] output: 46,000 HP ...

  8. Nuclear power - Wikipedia

    en.wikipedia.org/wiki/Nuclear_power

    Nuclear power's contribution to global energy production was about 4% in 2023. This is a little more than wind power, which provided 3.5% of global energy in 2023. [167] Nuclear power's share of global electricity production has fallen from 16.5% in 1997, in large part because the economics of nuclear power have become more difficult. [168]

  9. India–Bangladesh enclaves - Wikipedia

    en.wikipedia.org/wiki/India–Bangladesh_enclaves

    [3] [6] The Prime Ministers of India and Bangladesh signed the Land Boundary Agreement in 1974 to exchange enclaves and simplify their international border . A revised version of the agreement was adopted by the two countries on 7 May 2015, when the Parliament of India passed the 100th Amendment to the Constitution of India .