Author: jamespatewilliamsjr
Exercises for the Feynman Lectures on Physics by Richard Feynman, Et Al. Chapter 38 Differential Calculus of Vector Fields – Detailed Work by James Pate Williams, Jr. BA, BS, MSwE, PhD
Separation and Partial Solution of the Time Dependent Schrödinger Equation for the Non-Relativistic Hydrogen-Like Atom by James Pate Williams, Jr. BA, BS, MSwE, PhD
In the following terse document we start with the non-relativistic and time dependent Schrödinger equation for the hydrogen-like atom of atomic number Z. We then separate the equation into one ordinary differential equation eigenvalue problem involving the variable time and two partial differential equations eigenvalue problems, each with three variables. The resulting center of mass partial differential equation eigenvalue problem is separable in Cartesian coordinates. The other eigenvalue problem is not separable in Cartesian coordinates due to the nature of the potential energy function in the Hamiltonian operator. This treatment is an expansion on the excellent textbook section that is cited in the References section of the document.
A Modern Reincarnation of Ordnance Pamphlet 770 October 1941 by James Pate Williams, Jr. BA, BS, MSwE, PhD
Ordnance Pamphlet 770 by the United States Navy is concerned with testing and calibrating the 16 inch/50 caliber guns of the Iowa class of fast battleships. I use modern digital computer methods to attempt to reproduce the analog computations of the ordnance pamphlet. Recall that digital computers did not exist in 1941, but analog computers using cams, differentials, gears, and levers did exist.
Stefan’s Law
Exercises for the Feynman Lectures on Physics by Richard Feynman, Et Al. Chapter 36 Fourier Analysis of Waves– Detailed Work by James Pate Williams, Jr. BA, BS, MSwE, PhD
Exercises for the Feynman Lectures on Physics by Richard Feynman, Et Al. Chapter 36 Fourier Analysis of Waves– Detailed Computer Work by James Pate Williams, Jr. BA, BS, MSwE, PhD


















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