Anthony Philip French (1920–2017)

Focuses heavily on the Schrodinger Equation but don't let that make you think it's gonna be easy; the hydrogen atom is covered in great detail and that's where I first met the amazingly versatile method called Perturbation Theory, which can be found in classical mechanics, plasma physics, every formulation of quantum mechanics, General Relativity and even String Theory, besides a zillion others I've never come across, no doubt.

There's considerable merit to focusing initially on the Schrodinger Equation; students are invariably familiar with wave equations and therefore can focus on the conceptual peculiarities of quantum mechanics without the distracting confusion of the more abstract and alien formalisms.… (altro)