General Physics: Mechanics and Molecular Physics

General Physics I. Molecular Beams

1. Introduction Since the first measurements of the velocity distribution of atoms evaporating from the surface of bulk liquid helium by Johnston and King, several theories have been advanced to explain the helium evaporation process. In these theories, the excita-tions in liquid He II, phonons and rotons, play an important role in the evaporation mechanism. In this report, we discuss an experi...

General Physics I. Molecular Collisions

Continuum Mechanics in Physics Education

physics education is the nearly complete absence of continuum mechanics in the typical undergraduate or graduate curriculum. Continuum mechanics refers to field descriptions of mechanical phenomena, which are usually modeled by partial differential equations. The Navier–Stokes equations for the velocity and pressure fields of Newtonian fluids provide an important example, but continuum modeling...

Neoclassical Physics - Corpuscular Quantum Mechanics

In the article the motion of a body on a circumference is updated and the hypothesis of originating of a gravidynamic field is stated at motion of gravitational charges. 1. ABOUT UNIVERSAL ENERGY of REPULSING Let's untwist a small weight on cord. Thus the small weight has potential energy of attraction to center of rotation, but let's doubt that the small weight, moving on a circumference, has ...

Chapter 31 Quantum Mechanics and Atomic Physics