A constant is a variable that cannot be changed or is purposefully not changed throughout an experiment conducted in accordance with scientific principles. While certain constants are chosen and used on purpose by the scientist to regulate an experiment, others are more general and outside of their control.
Any experiment that is carried out using the scientific method will have both experimental and constant variables. The factors a scientist chooses to alter in order to research their effects are known as experimental variables. Constants are variables that are maintained at their current value to guarantee that every effect being examined and quantified is a result of an experimental variable.
The experimental variable for the experiment would be temperature if a researcher wants to investigate how temperature affects the growth and development of garden snakes. To prevent inaccurate data, all other factors would need to remain constant.
For reliable results and a credible study, it would be necessary for numerous variables, like cage size, light intensity, food, and others, to remain consistent. They are constant variables. Even when some variables are out of a scientist’s control, they are still regarded as constants.
The speed of light, gravity, and electrical charge are among the so-called universal constants. While universal constants have an impact on experiments, they remain constant during an experiment regardless of the scientist’s control.