Energiasäilivus

Energiasäilivus, also known as energy conservation, is a fundamental principle in physics stating that the total energy of an isolated system remains constant over time. This means energy can neither be created nor destroyed, only transformed from one form to another. For example, a falling object converts potential energy into kinetic energy as it accelerates. Sunlight, a form of electromagnetic energy, can be converted into chemical energy by plants through photosynthesis or into electrical energy by solar panels. In a closed system, the sum of all energy forms, including kinetic, potential, thermal, chemical, and nuclear energy, will always be the same. This principle applies across all scales, from subatomic particles to the entire universe. Understanding energiasäilivus is crucial for analyzing and predicting the behavior of physical systems and forms the basis for many scientific and engineering applications. It highlights that while energy can change its appearance or location, its total quantity is immutable.