classical physics
Sign in to savetheories of physics that predate modern, more complete, or more widely applicable theories
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Classical physics refers to the older theories of physics—like Newton's laws of motion and gravity—that were developed before modern physics theories like quantum mechanics and relativity. It still matters today because it accurately describes the everyday world around us, from how cars move to how planets orbit, even though we now know it has limitations when dealing with very tiny particles or extreme conditions.
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Impact of relativity and quantum mechanics on classical mechanics
Classical physics consists of scientific theories in the field of physics that are non-quantum or both non-quantum and non-relativistic, depending on the context. In historical discussions, classical physics refers to pre-1900 physics, while modern physics refers to post-1900 physics, which incorporates elements of quantum mechanics and the theory of relativity. However, relativity is based on classical field theory rather than quantum field theory, and is often categorized as a part of "classical physics".