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  2. List of mathematical constants - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematical_constants

    The following list includes the continued fractions of some constants and is sorted by their representations. Continued fractions with more than 20 known terms have been truncated, with an ellipsis to show that they continue. Rational numbers have two continued fractions; the version in this list is the shorter one.

  3. Pi - Wikipedia

    en.wikipedia.org/wiki/Pi

    But every number, including π, can be represented by an infinite series of nested fractions, called a simple continued fraction: = + + + + + + + + Truncating the continued fraction at any point yields a rational approximation for π ; the first four of these are 3 , ⁠ 22 / 7 ⁠ , ⁠ 333 / 106 ⁠ , and ⁠ 355 / 113 ⁠ .

  4. Chromosome 13 - Wikipedia

    en.wikipedia.org/wiki/Chromosome_13

    The following are some of the gene count estimates of human chromosome 13. Because researchers use different approaches to genome annotation their predictions of the number of genes on each chromosome varies (for technical details, see gene prediction).

  5. Iodine-123 - Wikipedia

    en.wikipedia.org/wiki/Iodine-123

    Iodine-123 (123 I) is a radioactive isotope of iodine used in nuclear medicine imaging, including single-photon emission computed tomography (SPECT) or SPECT/CT exams. The isotope's half-life is 13.2232 hours; [1] the decay by electron capture to tellurium-123 emits gamma radiation with a predominant energy of 159 keV (this is the gamma primarily used for imaging).

  6. Alcohol by volume - Wikipedia

    en.wikipedia.org/wiki/Alcohol_by_volume

    Thus, alc/vol is not the same as volume fraction expressed as a percentage. Volume fraction, which is widely used in chemistry (commonly denoted as v/v), is defined as the volume of a particular component divided by the sum of all components in the mixture when they are measured separately.

  7. Soviet Union - Wikipedia

    en.wikipedia.org/wiki/Soviet_Union

    The Union of Soviet Socialist Republics [u] (USSR), [v] commonly known as the Soviet Union, [w] was a transcontinental country that spanned much of Eurasia from 1922 to 1991. . During its existence, it was the largest country by area, extending across eleven time zones and sharing borders with twelve countries, and the third-most populous co

  8. Midland, Michigan - Wikipedia

    en.wikipedia.org/wiki/Midland,_Michigan

    Midland is a city in and the county seat of Midland County, Michigan, in the United States. [5] The city's population was 42,547 as of the 2020 census. [2] It is the principal city of the Midland Metropolitan Statistical Area, part of the larger Saginaw-Midland-Bay City Combined Statistical Area.

  9. List of sports - Wikipedia

    en.wikipedia.org/wiki/List_of_sports

    A comprehensive list of sports, including various physical activities and games.