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  2. 24-form tai chi - Wikipedia

    en.wikipedia.org/wiki/24-form_tai_chi

    The form was the result of an effort by the Chinese Sports Committee, which, in 1956, brought together four tai chi teachers—Chu Guiting, Cai Longyun, Fu Zhongwen, and Zhang Yu—to create a simplified form of tai chi as exercise for the masses. Some sources suggests that the form was structured in 1956 by master Li Tianji (李天骥).

  3. Ratio - Wikipedia

    en.wikipedia.org/wiki/Ratio

    When a ratio is written in the form A:B, the two-dot character is sometimes the colon punctuation mark. [8] In Unicode, this is U+003A : COLON, although Unicode also provides a dedicated ratio character, U+2236 ∶ RATIO. [9] The numbers A and B are sometimes called terms of the ratio, with A being the antecedent and B being the consequent. [10]

  4. Silver ratio - Wikipedia

    en.wikipedia.org/wiki/Silver_ratio

    In mathematics, the silver ratio is a geometrical proportion close to 70/29.Its exact value is 1 + √2, the positive solution of the equation x 2 = 2x + 1.. The name silver ratio results from analogy with the golden ratio, the positive solution of the equation x 2 = x + 1.

  5. Dimensionless numbers in fluid mechanics - Wikipedia

    en.wikipedia.org/wiki/Dimensionless_numbers_in...

    Dimensionless numbers (or characteristic numbers) have an important role in analyzing the behavior of fluids and their flow as well as in other transport phenomena. [1] They include the Reynolds and the Mach numbers, which describe as ratios the relative magnitude of fluid and physical system characteristics, such as density, viscosity, speed of sound, and flow speed.

  6. Cross-multiplication - Wikipedia

    en.wikipedia.org/wiki/Cross-multiplication

    In mathematics, specifically in elementary arithmetic and elementary algebra, given an equation between two fractions or rational expressions, one can cross-multiply to simplify the equation or determine the value of a variable.

  7. Triangular number - Wikipedia

    en.wikipedia.org/wiki/Triangular_number

    Print/export Download as PDF; Printable version; In other projects ... In the limit, the ratio between the two numbers, dots and line segments is ...

  8. Law of definite proportions - Wikipedia

    en.wikipedia.org/wiki/Law_of_definite_proportions

    The law of definite proportion was given by Joseph Proust in 1797. [2]I shall conclude by deducing from these experiments the principle I have established at the commencement of this memoir, viz. that iron like many other metals is subject to the law of nature which presides at every true combination, that is to say, that it unites with two constant proportions of oxygen.

  9. Trigonometry - Wikipedia

    en.wikipedia.org/wiki/Trigonometry

    Trigonometry (from Ancient Greek τρίγωνον (trígōnon) 'triangle' and μέτρον (métron) 'measure') [1] is a branch of mathematics concerned with relationships between angles and side lengths of triangles.