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  2. Speed of light - Wikipedia

    en.wikipedia.org/wiki/Speed_of_Light

    By using the value of c, as well as an accurate measurement of the second, one can establish a standard for the metre. [ 13 ] The particular value chosen for the speed of light provided a more accurate definition of the metre that still agreed as much as possible with the definition used before 1983.

  3. Coulomb - Wikipedia

    en.wikipedia.org/wiki/Coulomb

    The SI defines the coulomb as "the quantity of electricity carried in 1 second by a current of 1 ampere". Then the value of the elementary charge e is defined to be 1.602 176 634 × 10 −19 C. [3]

  4. C-value - Wikipedia

    en.wikipedia.org/wiki/C-value

    C-value is the amount, in picograms, of DNA contained within a haploid nucleus (e.g. a gamete) or one half the amount in a diploid somatic cell of a eukaryotic organism. In some cases (notably among diploid organisms), the terms C-value and genome size are used interchangeably; however, in polyploids the C-value may represent two or more genomes contained within the same nucleus.

  5. gc (engineering) - Wikipedia

    en.wikipedia.org/wiki/Gc_(engineering)

    In unit systems where force is a derived unit, like in SI units, g c is equal to 1. In unit systems where force is a primary unit, like in imperial and US customary measurement systems, g c may or may not equal 1 depending on the units used, and value other than 1 may be required to obtain correct results. [2]

  6. 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, ... where b,c are coprime integers. 1973 Beraha constants + ⁡ 1974 ...

  7. List of physical constants - Wikipedia

    en.wikipedia.org/wiki/List_of_physical_constants

    1.089(29) × 10 −52 m −2 ‍ [c] 1.088(30) ... While the values of the physical constants are independent of the system of units in use, each uncertainty as ...

  8. Faraday constant - Wikipedia

    en.wikipedia.org/wiki/Faraday_constant

    Value 9.648 533 212 331 001 84 × 10 4 C⋅mol −1 In physical chemistry , the Faraday constant (symbol F , sometimes stylized as ℱ) is a physical constant defined as the quotient of the total electric charge ( q ) by the amount ( n ) of elementary charge carriers in any given sample of matter: F = q / n ; it is expressed in units of ...

  9. C - Wikipedia

    en.wikipedia.org/wiki/C

    In English orthography, c generally represents the "soft" value of / s / before the letters e (including the Latin-derived digraphs ae and oe , or the corresponding ligatures æ and œ ), i , and y , and a "hard" value of / k / before any other letters or at the end of a word.