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  2. List of mathematical constants - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematical_constants

    A mathematical constant is a key number whose value is fixed by an unambiguous definition, often referred to by a symbol (e.g., an alphabet letter), or by mathematicians' names to facilitate using it across multiple mathematical problems. [1]

  3. Orders of magnitude (power) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(power)

    2.9 × 10 14: tech: the power the Z machine reaches in 1 billionth of a second when it is fired [citation needed] 3 × 10 14: weather: Hurricane Katrina's rate of release of latent heat energy into the air. [48] 3 × 10 14: tech: power reached by the extremely high-power Hercules laser from the University of Michigan. [citation needed] 4.6 × 10 14

  4. Orders of magnitude (frequency) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude...

    The Hubble constant (once in 13.8 billion years) 10 −17: 10 aHz ~79 aHz: Supercontinent cycle (about every 400 million years) 10 −16: 100 aHz ~137.8 aHz: Once per galactic year (about every 230 million years) 10 −15: 1 femtohertz (fHz) ~3 fHz: Sound waves created by a supermassive black hole in the Perseus cluster [1] 10 −14: 10 fHz ~31 ...

  5. Fourth power - Wikipedia

    en.wikipedia.org/wiki/Fourth_power

    Fermat knew that a fourth power cannot be the sum of two other fourth powers (the n = 4 case of Fermat's Last Theorem; see Fermat's right triangle theorem). Euler conjectured that a fourth power cannot be written as the sum of three fourth powers, but 200 years later, in 1986, this was disproven by Elkies with: 20615673 4 = 18796760 4 ...

  6. Binomial approximation - Wikipedia

    en.wikipedia.org/wiki/Binomial_approximation

    The binomial approximation for the square root, + + /, can be applied for the following expression, + where and are real but .. The mathematical form for the binomial approximation can be recovered by factoring out the large term and recalling that a square root is the same as a power of one half.

  7. Power of 10 - Wikipedia

    en.wikipedia.org/wiki/Power_of_10

    Where a power of ten has different names in the two conventions, the long scale name is shown in parentheses. The positive 10 power related to a short scale name can be determined based on its Latin name-prefix using the following formula: 10 [(prefix-number + 1) × 3] Examples: billion = 10 [(2 + 1) × 3] = 10 9; octillion = 10 [(8 + 1) × 3 ...

  8. Gradian - Wikipedia

    en.wikipedia.org/wiki/Gradian

    ⁠ π / 8 ⁠ or ⁠ 𝜏 / 16 ⁠ rad 22.5° 25 g ⁠ 1 / 12 ⁠ turn ⁠ π / 6 ⁠ or ⁠ 𝜏 / 12 ⁠ rad 30° ⁠33 + 1 / 3 ⁠ g ⁠ 1 / 10 ⁠ turn ⁠ π / 5 ⁠ or ⁠ 𝜏 / 10 ⁠ rad 36° 40 g ⁠ 1 / 8 ⁠ turn ⁠ π / 4 ⁠ or ⁠ 𝜏 / 8 ⁠ rad 45° 50 g ⁠ 1 / 2 π or 𝜏 ⁠ turn 1 rad approx. 57.3° approx. 63.7 g ⁠ 1 ...

  9. Eighth power - Wikipedia

    en.wikipedia.org/wiki/Eighth_power

    In arithmetic and algebra, the eighth power of a number n is the result of multiplying eight instances of n together. So: n 8 = n × n × n × n × n × n × n × n. Eighth powers are also formed by multiplying a number by its seventh power, or the fourth power of a number by itself. The sequence of eighth powers of integers is: