A variable is a special type of amount or quantity with an unknown value. The opposite of a variable (that is, a known value) is called a constant. In...

independent variables. The dependent variable is the possible outcome of the experiment; the effect. It depends on what happens to other variables in the experiment...

Cepheids are a type of very luminous variable stars. There is a strong direct relationship between a Cepheid's luminosity and its pulsation period. This...

The variable antshrike (Thamnophilus caerulescens) is a species of bird in the Thamnophilidae family found most in South America. It is (as its name) arguably...

A variable star is a star that is sometimes brighter or dimmer. Most stars have only very small differences in brightness, like the Sun; but some stars...

The variable oystercatcher, black oystercatcher, tōrea pango, or tōrea tai (Haematopus unicolor) is a bird in the family Haematopodidae. It lives in New...

Luminous blue variables (LBVs) are massive evolved stars. They show unpredictable and sometimes dramatic variations in their spectra and their brightness...

An explanatory variable is a type of independent variable. The two terms are often used interchangeably. But there is a subtle difference between the two...

A control variable is something in an experiment that is kept the same. Having control variables means that the experiment will be a fair test. The Control...

A random variable is used in mathematics to study probability theory. It was developed to model the chance of events happening in all kinds of real-life...

variables are variables which have a lifetime in a local or narrow scope. The declared local variable in a function or a block shadows the variable which...

A variable in a program is a place where data is stored and put it or set. In most computer languages it is used by typing var, or const. In some languages...

Lyrae is a pulsating variable star in the constellation Lyra. It is the model for the variable stars known as RR Lyrae variables. It pulses over a short...

A variable nebula is a reflection nebula that gets brighter and darker because of changes in its star. This short article about science can be made longer...

A variable-frequency drive (VFD) is a device used to control the speed and torque of an AC motor by changing the motor input frequency and voltage. VFDs...

A variable-width encoding is a type of character encoding scheme in which codes of different lengths are used to encode a character set for representation...

The Variable Cattleheart (Parides erithalion) is a species of butterfly. It belongs in the family Papilionidae. It is found in North America and South...

The variable bubble-nest frog or variable bush frog (Pseudophilautus variabilis) is a frog. It lives in Sri Lanka. Scientists have seen it in exactly...

{3}}\right)a^{2}\\&\approx 11{,}19615\,a^{2}.\end{aligned}}} The variable A represents the area, and the variable a represents the apothem. The perimeter of a regular...

mathematical terms called monomials. That is, a number, a variable, or a product of a number and several variables. When an algebraic expression contains letters...

The variable platyfish (Xiphophorus variatus), also known as variatus platy or variegated platy, is a species of freshwater fish in the Poeciliidae family...

determining the response of the system over a period of time, the independent variables are modulated, while the parameters are held constant. The function or...

Thursday. In science t is most times used as a variable for time. T is most times used as a variable for temperature. In logic T is for True, whereas...

A flare star is a variable star that becomes very much brighter unpredictably for a few minutes at a time. Flares happen on flare stars in a similar way...

mathematics, y is another unknown variable, used as a second unknown variable ("x" is used as the first unknown variable) The Simple English Wiktionary has...

test is done either to show that two random variables follow the same distribution, or that one random variable follows a given distribution. It is named...

economic variable, usually supply or demand, in relation to another economic variable such as income or price. The elasticity of a variable is a measure...

Algebra is a part of mathematics. It uses variables to represent a value that is not yet known or can be replaced with any value. When an equals sign...

also be a variable such as a {\displaystyle a} , b {\displaystyle b} and c {\displaystyle c} . The object can be such things as a variable, a vector,...

the Roman L and Cyrillic Л. In mathematics, the lowercase λ is used as a variable for eigenvalues in linear algebra, and as the parameter of both exponential...

equation that is only true for certain values of the variable(s). The equation is only true if the variable(s) have that value. For example: 2 ⋅ x = 8 → x =...

R Scuti is a variable star located in the Scutum constellation. It is the first variable star discovered in its constellation. This short article about...

number of independent random variables, their sum will follow a stable distribution. If the variance of the random variables is finite, then a Gaussian...

say 'Hello World!' You can use variables in Perl. A variable is a box where you can put items. In Perl, some variables starts with their own sigil. A...

integral is a way to calculate the limiting value a function with one variable will tend towards. Graphically, this can then be shown as the area under...

language. What it does is it checks to see if the name variable is Bill. If the name variable is Bill, then it will print out the words "Hi Bill!". #...

one complex variable (Vol. 2). New York: McGraw-Hill. Shabat, B. V. (1992). Introduction to complex analysis: functions of several variables (Vol. 110)...

spectroscopes, the first star of its type discovered, and one of the first variable stars to be discovered before it explodes. Algol is made of three stars...

Standardization. Every variable has to be declared before it is used. Pascal is a strongly typed programming language: Every variable has a data type. You...

for function: "A function of a variable quantity is an analytic expression composed in any way whatsoever of the variable quantity and numbers or constant...

power in the variable x {\displaystyle x} is 3 {\displaystyle 3} . It occurs in the term x 3 {\displaystyle x^{3}} . The name of the variable is not important...

X Carinae is a Beta Lyrae variable in the constellation Carina. It ranges between magnitudes 7.9 and 8.65 over a period of approximately 1.08 days. "X...

change. Constants (numbers) are used in maths and computer programming. Variable This short article about technology can be made longer. You can help Wikipedia...

versions after ES5, variables can be defined using const for constant variables and let for local variables. The value of constant variables cannot be re-declared...

set of variables. Mathematicians show the relationship between different factors in the form of equations. "Linear equations" mean the variable appears...

Universal life insurance Indexed universal life insurance Variable life insurance Variable universal life insurance Final expense insurance Group life...

87 ly) away from it. Both the stars are variables. The most spectacular is Luyten 726-8B, which was given the variable star designation UV Ceti (the other...

antibodies. The main mechanism is called RNA splicing. Antibodies have a 'variable region' in their structure. Tonegawa compared the DNA of B cells (a type...

night sky, and the second-brightest in Orion. Betelgeuse is a semiregular variable star whose apparent magnitude varies between 0.2 and 1.2. This is the widest...

brighter than the Sun. Mu Cephei is also the "prototype" of the semiregular variable star type. Artist's picture 119 Tauri Pi1 Gruis Antares Betelgeuse VV Cephei...