Symmetry plays a crucial role in physics from "summary" of La vita del cosmo by Lee Smolin
Symmetry is a foundational concept in the language of physics. It serves as a guiding principle that allows us to uncover the underlying order and structure of the universe. By studying the symmetries present in physical systems, we can gain insights into the fundamental laws that govern the behavior of particles and forces. One of the most powerful tools in the physicist's toolkit is the principle of symmetry conservation. This principle states that certain quantities, such as energy, momentum, and angular momentum, remain constant in a closed system when the system exhibits certain symmetries. For example, the conservation of energy arises from the fact that the laws of physics do not change over time, a symmetry known as time translation inva...
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