An excellent read:
Historically, Isaac Newton derived the laws for forces and motion of masses, Albert Einstein modified them by adding the 'effective mass' factor for relativistic particles, and Niels Bohr complicated the atomic model by proposing that tiny particles (electrons) orbit around a massive nucleus. More recently, scientists have needed to describe more and more particles to explain the particulate nature of the atom. So far, these particles include quarks, gravitons, muons, mesons, kaons, pions - and scientists will surely need to invent more, as long as the real geometric rules of nature remain unknown.
The Particle: Introduction
Historically, Isaac Newton derived the laws for forces and motion of masses, Albert Einstein modified them by adding the 'effective mass' factor for relativistic particles, and Niels Bohr complicated the atomic model by proposing that tiny particles (electrons) orbit around a massive nucleus. More recently, scientists have needed to describe more and more particles to explain the particulate nature of the atom. So far, these particles include quarks, gravitons, muons, mesons, kaons, pions - and scientists will surely need to invent more, as long as the real geometric rules of nature remain unknown.
The Particle: Introduction
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