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Historically, classical
mechanics came first, while quantum mechanics is a comparatively
recent invention. Classical mechanics originated with Isaac
Newton's laws of motion in Principia Mathematica, while quantum
mechanics didn't appear until 1900. Both are commonly held to
constitute the most certain knowledge that exists about physical
nature. Classical mechanics has especially often been viewed as a
model for other so-called exact sciences. Essential in this
respect is the relentless use of mathematics in theories, as well
as the decisive role played by experiment in generating and
testing them. "Wikipedia" |