| [Visitor (112.0.*.*)]answers [Chinese ] | Time :2022-05-25 |  Conservation of energy law: The first law of thermodynamics refers to the total energy in a closed (isolated) system that remains constant. The total energy is no longer just the sum of kinetic energy and potential energy, but the total amount of stationary energy (inherent energy), kinetic energy, and potential energy.
The law of conservation of energy can be expressed as follows: the total energy of a system can only change equal to the amount of energy coming in or out of the system. The total energy is the sum of the mechanical energy, thermal energy and any form of internal energy other than thermal energy of the system.
If a system is in an isolated environment, it is not possible to have energy or mass coming in or out of the system. In this case, the law of conservation of energy is expressed as:
"The total energy of the isolated system remains constant."
Energy does not arise out of thin air, nor does it disappear out of thin air, it only transforms from one form to another, or from one object to another, while the total amount of energy remains the same. The law of conservation of energy is one of the fundamental laws that prevail in nature. |
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