| This assumption violates the first law of thermodynamics, also called the law of conservation of energy, which states that the total energy of a system is always constant. |
| This sequence of events does not violate the law of conservation of energy because energy is returned quickly enough to create an overall equilibrium. |
| Einstein and Max Planck demonstrated once again that energy could neither be created nor lost and that it left one system only to join another — the famous law of conservation of energy. |
| The law of conservation of energy applies. |
| Until early in the present century scientists made use of a law of conservation of matter and a law of conservation of energy. |
| The law of conservation of energy is applied not only to nature as a whole but to closed or isolated systems within nature as well. |
