Posted by Gerard on December 10, 2019, 10:20 am, in reply to "More Things"
"But as physicists sought to extend this mechanics to describe the inner workings of atoms, in which the things that move are electrons orbiting atomic nuclei, they found that the old laws and equations no longer applied. The quantum nature of matter and radiation means that a particle like an electron can behave as though it is distributed through space, like a wave. In 1926, Erwin Schrödinger developed a theory to describe such combined wave-particle behaviour, in which the electron’s motion is described by a quantum wavefunction." https://www.prospectmagazine.co.uk/science-and-technology/the-impossibly-stubborn-question-at-the-heart-of-quantum-mechanics