logarithm : Idioms & Phrases

Index

Arithmetical complement of a logarithm

  • . See Logarithm.
  • the difference between a logarithm and the number ten.
Webster 1913

Arithmetical compliment of a logarithm

  • . See under Logarithm.
Webster 1913

Binary logarithms

  • a system of logarithms devised by Euler for facilitating musical calculations, in which 1 is logarithm of 2, instead of 10, as in the common logarithms, and the modulus 1.442695 instead of .43429448.
Webster 1913

common logarithm

  • noun a logarithm to the base 10
WordNet

Common logarithms, ∨ Brigg's logarithms

  • logarithms of which the base is 10; so called from Henry Briggs, who invented them.
Webster 1913

Gauss's logarithms

  • tables of logarithms constructed for facilitating the operation of finding the logarithm of the sum of difference of two quantities from the logarithms of the quantities, one entry of those tables and two additions or subtractions answering the purpose of three entries of the common tables and one addition or subtraction. They were suggested by the celebrated German mathematician Karl Friedrich Gauss (died in 1855), and are of great service in many astronomical computations.
Webster 1913

Hyperbolic logarithm

  • . See Logarithm.
Webster 1913

Hyperbolic, ∨ Napierian, logarithms usually called 'natural logarithms'

  • those logarithms (devised by John Speidell, 1619) of which the base is 2.7182818; so called from Napier, the inventor of logarithms.
Webster 1913

Index of a logarithm

  • (Math.), the integral part of the logarithm, and always one less than the number of integral figures in the given number. It is also called the characteristic.
Webster 1913

Logistic ∨ Proportionallogarithms.

  • See under Logistic.
Webster 1913

Logistic, ∨ Proportional, logarithms

  • certain logarithmic numbers used to shorten the calculation of the fourth term of a proportion of which one of the terms is a given constant quantity, commonly one hour, while the other terms are expressed in minutes and seconds; not now used.
Webster 1913

Modulus of a system of logarithms

  • (Math.), a number by which all the Napierian logarithms must be multiplied to obtain the logarithms in another system.
Webster 1913

Naperian logarithms

  • . See under Logarithms.
Webster 1913

napierian logarithm

  • noun a logarithm to the base e
    Napierian logarithm.
WordNet

natural logarithm

  • noun a logarithm to the base e
    Napierian logarithm.
WordNet

Proportional logarithms

  • logistic logarithms. See under Logistic.
Webster 1913