Search results
Results from the WOW.Com Content Network
The neper is a natural linear unit of relative difference, meaning in nepers (logarithmic units) relative differences add rather than multiply. This property is shared with logarithmic units in other bases, such as the bel. The derived units decineper (1 dNp = 0.1 neper) and centineper (1 cNp = 0.01 neper) are also used. [6]
Neper's body was dotted to represent grains. The hieroglyphs that write his name similarly include the symbols of grain. Naturally, as lord of the mouth, Neper's mother was identified as Renenutet, who gave out the ren, a person's true name, and who was also identified as a source of nourishment.
The number e is a mathematical constant approximately equal to 2.71828 that is the base of the natural logarithm and exponential function.It is sometimes called Euler's number, after the Swiss mathematician Leonhard Euler, though this can invite confusion with Euler numbers, or with Euler's constant, a different constant typically denoted .
α is called the neper frequency, or attenuation, and is a measure of how fast the transient response of the circuit will die away after the stimulus has been removed. Neper occurs in the name because the units can also be considered to be nepers per second, neper being a logarithmic unit of attenuation. ω 0 is the angular resonance frequency. [3]
John Napier of Merchiston (/ ˈ n eɪ p i ər / NAY-pee-ər; [1] Latinized as Ioannes Neper; 1 February 1550 – 4 April 1617), nicknamed Marvellous Merchiston, was a Scottish landowner known as a mathematician, physicist, and astronomer. He was the 8th Laird of Merchiston. John Napier is best known as the discoverer of logarithms.
Neper is a logarithmic unit of ratio. Neper may also refer to: John Napier, a Scottish mathematician; Neper (crater), a lunar impact crater; Neper (mythology), an ...
A field level (or root-power level) is a logarithmic quantity used to measure quantities of which the square is typically proportional to power (for instance, the square of voltage is proportional to power by the inverse of the conductor's resistance), etc., with commonly used units neper (Np) or decibel (dB).
p is the root mean square sound pressure, [6] p 0 is a reference sound pressure, 1 Np is the neper, 1 B = ( 1 / 2 ln 10) Np is the bel, 1 dB = ( 1 / 20 ln 10) Np is the decibel. The commonly used reference sound pressure in air is [7]