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What is a constant?

Andrey Kresrerev
Andrey Kresrerev
March 25, 2015
What is a constant?

The concept of a constant, many face back in school. This term is derived from the Latin "constans". Literally translated, it means "permanent." That is the meaning of the word constant in a general sense - some constant value.

Let's take a closer look at what a constant is.

Notion of constant

In mathematics, a constant is defined as a quantity that does not change its value in the process under consideration. One of the most well-known constants is Pi, equal to about 3.14159. In addition to her in mathematics, there are more than two dozen permanent.

In physics, the constant is called the fundamental physical constants. These constants are included in formulas that describe various laws of nature and properties of matter. The concept of constants in physics can be used as a numerical value, which does not depend on any parameters and does not change over time (for example, the speed of light in a vacuum). Also, a constant may imply a change in the value of a specific quantity that will be irrelevant for the task or process in question.This is the heliocentric constant, which changes to a lesser direction with decreasing mass of the sun, but for space flight this is a minor change and is not taken into account.

In programming, a constant is the prohibition of a program to address data.


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