known that the energy levels of a rotating diatomic molecule are given by E n = n ( n + 1 ) h 2 8 π 2 I , {\displaystyle E_{n}={\frac {n(n+1)h^{2}}{8\pi...

release energy that has been stored as potential energy in the Earth's gravitational field or elastic strain (mechanical potential energy) in rocks. Prior to...

Zero-point energy (ZPE) is the lowest possible energy that a quantum mechanical system may have. Unlike in classical mechanics, quantum systems constantly...

Renewable energy (or green energy) is energy from renewable natural resources that are replenished on a human timescale. Using renewable energy technologies...

The heating value (or energy value or calorific value) of a substance, usually a fuel or food (see food energy), is the amount of heat released during...

expansion is accelerating. Prior to this observation, scientists thought that the gravitational attraction of matter and energy in the universe would cause...

Compressed-air energy storage (CAES) is a way to store energy for later use using compressed air. At a utility scale, energy generated during periods...

energy function only in terms of prediction errors during task performance: ∂ E t o t a l ( Y V P , X S N , x C N , y K N ) ∂ y m n S N = x m n C N −...

energy transferred between systems due to a temperature difference. In colloquial use, heat sometimes refers to thermal energy itself. Thermal energy...

In physics, mass–energy equivalence is the relationship between mass and energy in a system's rest frame, where the two quantities differ only by a multiplicative...