Free Download of : Lecture Notes on Quantum Mechanics
In the first quarter of this century , it was discovered that the laws of motion formulated by Galileo, Newton, Lagrange, Hamilton, Maxwell, and many others, were inadequate to explain a wide range of phenomena in volving electrons, atoms, and ligh t. After a great deal of efort, a new theory (together with a new law of motion) emerged in 1924.
That theory is known as quantum mechanics, and it is now the basic framework for understanding atomic, nuclear, and subnuclear physics, as well as condensed-matter (or “solid-state”) physics. The laws of motion (due to Galileo, Newton,…) which preceded quantum theory are referred to as classical mechanics.
Although classical mechanics is now regarded as only an approximation to quantum mechanics, it is still true that much of the structure of the quantum theory is inherited from the classical theory that it replaced. So we begin with a lightning review of classical mechanics, whose formulation begins (but does not end!) with Newton’s law F = ma. …….