Astronomy   View all facts   Glossary   Help | 
| abstraction > mathematical concept > number > quantity > energy > rest-mass energy | 
| rest-mass energy comparison table | ||
| Subject | is a kind of | has definition | 
|---|---|---|
| energy | quantity | |
| rest-mass energy | energy | The energy which a particle has even when it is at rest. According to the famous relation E = mc2 of special relativity, this rest energy is equal to the rest mass of the particle-the mass it has when a rest-times the square of the speed of light. If the mass is in grams and the speed of light in centimeters per second (c = 2.998 × 1010 centimeters per second), then the energy is given in ergs. | 
Next energy: thermal energy     Up: energy    Previous energy: potential energy