| QNUCLEAR PHYSICS See <<disintegration energy>> PHYSICS A measure of the ability of a system with periodic behavior to store energy equal to 2π times the average energy stored in the system divided by the energy dissipated per cycle. Also known as Q factor; quality factor; storage factor. THERMODYNAMICS A unit of heat energy, equal to 1018 British thermal units, or approximately 1.055 × 1021 joules. |