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 …
What Does a Non-Relativistic Approach Mean in Quantum Mechanics?
Jun 29, 2015 · The discussion focuses on understanding the non-relativistic approach in quantum mechanics, particularly in the context of calculating the speed of an electron in the third orbit of He+. …
Best book on relativistic QM and QFT - Physics Forums
Sep 25, 2017 · I loved Modern Quantum Mechanics by Sakurai, where Quantum Mechanics is presented and worked out. Now I would like to proceed further, and learn about Relativistic Quantum …
How Does Newton's Second Law Adapt to Relativistic Speeds?
May 7, 2007 · In Newtonian Physics, a force on a object is equal to its mass times acceleration. This is Newton's Second Law. But in relativity, when the acceleration approaches the speed of light, …
Klein-Gordon equation in the nonrelativistic limit - Physics Forums
Dec 9, 2025 · I am reading Relativistic Quantum Mechanics Wave Equations, 3rd ed. - W. Greiner and I'm on section 1.3 looking at a solution ##\psi## to the Klein-Gordon...
What is the correct derivation of the relativistic rocket equation?
Sep 20, 2005 · I'm trying to derive the relativistic rocket equation, and I'm getting two different answers depending on the method I use. I think the first method is...
Relativistic vs. non-Relativistic Space-Time Perspectives Relativity equations examine Relativistic distortions from one perspective, the
How to fix Relativistic QM so it's consistent? - Physics Forums
Oct 25, 2025 · What attempts have been to resurrect RQM (in order to ditch the fields' notion)? Besides the appearance of negative energies (which I guess it's a blasphemy in physics), what other issues …
Addition of Velocities (Velocity Composition) in Special Relativity
May 20, 2024 · then do the special-relativistic analogue, then do the Galilean analogue (to obtain the familiar but unfortunately-“our common sense” formula). In response to “Construct a Diagram that …
Charged particle moving relativistically through E field
Apr 13, 2005 · Undergrad Need opinions on Youtube video: "From constant moving charge to SR" Dec 25, 2024 Replies 10 Views 2K Magnetic Fields of a Relativistic Charged Particle Apr 29, 2013 …