A non varying value or variable is termed as constants. They are predefined values defined by scientists. These values do not vary at any time and are used in various mathematical, physical and scientific equations. A set of predefined constants that are used in the field of physics, mathematics, chemistry etc are listed out here. Some of the well known constants in physics are planck's constant, gravitational constant etc., Pi and is a well known mathematical constant, Bohr's constant, Avogadro's number are some of the constants derived after the famous scientists.
Click on the constant name to know more about it like who discovered it, where it is used, symbol used and many more. This will help you in calculations that are involved with these constants.