Mathematicians sometimes distinguish between propositional constants, propositional variables, and schemata. Note that activities and equilibrium constants are dimensionless numbers. These are initialized to certain fixed constants. Values are derived using the 2006 values of the fundamental constants. This is a list of common physical constants and variables, and their notations. The same equation (modulo constants) results. This precision constrains the values of the other physical constants that define it. These reactions are extremely sensitive to the values of the fundamental constants. Templates may be parameterized by types, compile-time constants, and other templates. Some of the base units are now realised in terms of invariant constants of physics. "See also&colon;" mathematical constant for symbols of additional mathematical constants. These modes generally follow different propagation constants. "K" and" K" are examples of "stepwise" equilibrium constants. The Planck constant is one of the smallest constants used in physics. These solvents generally have intermediate dielectric constants and polarity.