Einstein equation

The Einstein equation (also: Einstein equation , Einstein equation or Einstein equation ) denotes:

• in kinetic gas theory the Einstein-Smoluchowski relationship
• four summarized, physical phenomena that are triggered by light, see photoelectric effect
• a classic description of gravitation, see Einstein's field equations
• also the conversion of energy into mass and vice versa, see equivalence of mass and energy

This is a disambiguation page for differentiating between several terms identified with the same word.