Laws of physics

way that things work, laws of how nature works

A physical law, scientific law, or a law of nature is a scientific generalization based on empirical observations of physical behavior. Empirical laws are typically conclusions based on repeated scientific experiments over many years, and which have become accepted universally within the scientific community. The production of a summary description of nature in the form of such laws is a fundamental aim of science.
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Mathematical equations and rules which predict the behaviour of the universe. They refer to quantities which can be observed and measured. The laws of physics are thought to have been shaped during the fleeting instants, known as the Planck time, following the big bang . It is a basic presupposition of science that the laws are invariant over all time and space.