Equation (disambiguation)

An equation in mathematics is a formula stating that two expressions have the same value.

Equation may also refer to:


 * Chemical equation, a symbolic representation of a chemical reaction
 * Equation of time, the difference between solar time, as shown by a sundial, and mean time, as shown by a clock that runs at constant speed
 * Equation clock, a clock that contains a mechanism that embodies the equation of time, so the clock shows solar time
 * Equation of state, a relationship between physical conditions and the state of a material
 * Equation (band), an English folk band formed in 1996
 * Equation Group, a computer espionage group
 * "The Equation", a 2008 episode of Fringe
 * "[Equation]" (ΔMi−1 = −αΣundefinedNDi[n] [Σj∈C[i]Fji[n − 1] + Fexti[n−1]]), the first B-side of "Windowlicker" by Aphex Twin, also known as "[Formula]"