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First law of thermodynamics
The first law of thermodynamics states that the energy of a closed system is constant.
Explanation
When we observe nature and calculate the amount of energy, it always remains the same. The conservation of energy is one of the most basic laws of physics.
HistoryConservation of energy can be rigorously proven by Noether's theorem as the laws of physics do not change over time. That theorem was described by the German mathematician Emmy Noether in 1915. |