Kwiat, D. (2026) Planck’s Constant—A Bridge to Charge and Entanglement. Journal of High Energy Physics, Gravitation and Cosmology, 12, 471-483. doi: 10.4236/jhepgc.2026.121026 .
A basic pendulum is a mass at the end of a string that swings back and forth. It seems simple, and it appears in most introductory physics textbooks. But it's not a trivial problem to solve for the ...