universe parameter - ορισμός. Τι είναι το universe parameter
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Τι (ποιος) είναι universe parameter - ορισμός

EQUATION
Friedman equations; Friedmann's equation; Friedmann equation; Density parameter; Density of the universe; Friedmann's Equation; Density Parameter; Friedman equation; Freidmann equation; Friedmann Universe; Friedmann universe; Friedmann universes; Critical Mass Density of the Universe; Friedmann Equations; Critical density (cosmology)
  • [[Alexander Friedmann]]
  • Planck cosmology probe]] released new data refining these values to 4.9% ordinary matter, 25.9% dark matter and 69.1% dark energy.

Parameter (computer programming)         
IN COMPUTER PROGRAMMING, SPECIAL KIND OF VARIABLE THAT HOLDS DATA THAT WAS PASSED AS AN ARGUMENT TO A SUBROUTINE
Argument (computer science); Argument (programming); Parameter (programming); Formal parameter; Actual parameter; Parameters (computer science); Formal parameters; Function parameter; Argument (computing); Parameter (computer science); Parameter (computing); Output parameter; Out parameter; Return parameter; Argument (computer programming); Input parameter; Input value; Output value; Actual parameters
In computer programming, a parameter or a formal argument is a special kind of variable used in a subroutine to refer to one of the pieces of data provided as input to the subroutine. These pieces of data are the values of the arguments (often called actual arguments or actual parameters) with which the subroutine is going to be called/invoked.
Statistical parameter         
QUANTITY THAT INDEXES A PARAMETRIZED FAMILY OF PROBABILITY DISTRIBUTIONS
Numerical parameter; Population parameter; Statistical measure; Numeric parameter; Statistical parameters; True value
In statistics, as opposed to its general use in mathematics, a parameter is any measured quantity of a statistical population that summarises or describes an aspect of the population, such as a mean or a standard deviation. If a population exactly follows a known and defined distribution, for example the normal distribution, then a small set of parameters can be measured which completely describes the population, and can be considered to define a probability distribution for the purposes of extracting samples from this population.
Uncertainty parameter         
  • Function graph U(r)
PARAMETER QUANTIFYING THE UNCERTAINTY OF A PERTURBED ORBITAL SOLUTION FOR A MINOR PLANET
Uncertainty Parameter U; Uncertainty Parameter; Uncertainty parameter U
The uncertainty parameter U is introduced by the Minor Planet Center (MPC) to quantify the uncertainty of a perturbed orbital solution for a minor planet. The parameter is a logarithmic scale from 0 to 9 that measures the anticipated longitudinal uncertainty in the minor planet's mean anomaly after 10 years.

Βικιπαίδεια

Friedmann equations

The Friedmann equations are a set of equations in physical cosmology that govern the expansion of space in homogeneous and isotropic models of the universe within the context of general relativity. They were first derived by Alexander Friedmann in 1922 from Einstein's field equations of gravitation for the Friedmann–Lemaître–Robertson–Walker metric and a perfect fluid with a given mass density ρ and pressure p. The equations for negative spatial curvature were given by Friedmann in 1924.