What is relativistic mass and why it is not used much?
Aug 9, 2015 · The concept of relativistic mass In special relativity, the expressions for the total energy and momentum of an object can be written as where and is the invariant mass (or rest mass) of the …
Klein-Gordon equation in the nonrelativistic limit - Physics Forums
Dec 9, 2025 · Physicists, quantum mechanics students, and researchers interested in the foundations of relativistic quantum mechanics and the implications of the Klein-Gordon equation.
How Does Newton's Second Law Adapt to Relativistic Speeds?
May 7, 2007 · The discussion centers on the adaptation of Newton's Second Law to relativistic speeds, emphasizing that traditional formulations become inaccurate as velocities approach the speed of light.
Relativator (Circular Slide-Rule) – Simulated with Desmos
Sep 2, 2025 · "The Relativator" (a circular slide-rule for relativity and particle physics) has been implemented as an interactive simulation in Desmos.
Action in Relativity: Non-Relativistic vs Relativistic Particles
Jun 24, 2016 · The discussion clarifies the formulation of action in relativity, specifically distinguishing between two expressions: S = ∫ ds for non-relativistic particles and S = -mc ∫ ds for relativistic particles.
Threshold Energy Calculation for Proton-Proton Collision
Apr 15, 2008 · Understanding of relativistic physics concepts, including momentum and energy conservation. Familiarity with relativistic equations, specifically γm₀v and γm₀c². Knowledge of the …
How does this derivative work? And why the speed of light remains?
Dec 27, 2025 · Explore the concept of invariant mass in special relativity Investigate applications of relativistic equations in particle physics Students and professionals in physics, particularly those …
How to fix Relativistic QM so it's consistent? - Physics Forums
Oct 25, 2025 · The forum discussion centers on the challenges of reconciling Relativistic Quantum Mechanics (RQM) with established theories, particularly regarding the interpretation of probability …
Dirac Equation vs. Schrodinger Equation • Physics Forums
Jul 18, 2016 · The Dirac equation is the more generalized form of the Schrödinger equation and accounts for relativistic effects of particle motion (say an electron) by using a second order derivative …
Relativistic Velocity: Speed Limits & Ranges Explained
Oct 26, 2004 · Relativistic velocity refers to speeds where relativistic effects become significant, particularly when the Lorentz factor, γ, is substantially greater than 1. For instance, at v=0.1c (10% of …