Either of two subatomic particles in the meson family, one neutral and one positively charged, having masses 3,649 and 3,658 times that of the electron and average lifetimes of 4.2 X 10-13 and 1.1 X 10-12 seconds, respectively. See Table at subatomic particle.
Using Schrodinger’s method: particle in a 1-D Box
Particle Size Distribution – Pharmacuetical Process | Innopharma
Quantum Chemistry 3.11 – 3-D Particle in a Box – YouTube
Force fields on the coarse-grained 3-D wall particle domain: Stiff