numerical constant
21Dimensionless physical constant — In physics, a dimensionless physical constant (sometimes fundamental physical constant) is a universal physical constant that is dimensionless having no unit attached, so its numerical value is the same under all possible systems of units. The… …
22Physical constant — A physical constant is a physical quantity that is generally believed to be both universal in nature and constant in time. It can be contrasted with a mathematical constant, which is a fixed numerical value but does not directly involve any… …
23Euler–Mascheroni constant — Euler s constant redirects here. For the base of the natural logarithm, e ≈ 2.718..., see e (mathematical constant). The area of the blue region is equal to the Euler–Mascheroni constant. List of numbers – Irrational and suspected irrational… …
24Mathematical constant — A mathematical constant is a special number, usually a real number, that is significantly interesting in some way .[1] Constants arise in many different areas of mathematics, with constants such as e and π occurring in such diverse contexts as… …
25Planck constant — Planck s relation redirects here. For the law governing black body radiation, see Planck s law. Values of h Units 6.62606957(29)×10−34 J·s[1] 4.135 …
26Fine-structure constant — The fine structure constant or Sommerfeld fine structure constant, usually denoted alpha ,, is the fundamental physical constant characterizing the strength of the electromagnetic interaction.It is a dimensionless quantity, and thus its numerical …
27Boltzmann constant — For the constant pertaining to energy of black body radiation see Stefan–Boltzmann constant Values of k[1] Units 1.3806488(13)×10−23 J K−1 8.617332 …
28Catalan's constant — In mathematics, Catalan s constant G , which occasionally appears in estimates in combinatorics, is defined by:G = eta(2) = sum {n=0}^{infty} frac{( 1)^{n{(2n+1)^2} = frac{1}{1^2} frac{1}{3^2} + frac{1}{5^2} frac{1}{7^2} + cdotswhere β is the… …
29Mills' constant — In number theory, Mills constant is defined as the smallest positive real number A such that the floor of the double exponential function is a prime number, for all positive integers n. This constant is named after William H. Mills who proved in… …
30Gelfond's constant — In mathematics, Gelfond s constant, named after Aleksandr Gelfond, is :e^pi , that is, e to the power of π. Like both e and π, this constant is a transcendental number. This can be proven by Gelfond s theorem and noting the fact that: e^pi ; = ;… …
