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 …
Punching a hole in a tape moving at relativistic speed
Feb 11, 2024 · Such a oblique blade would make ellipse hole even in non-relativistic slow motion of tape. If all parts of brade touch the tape simultaneously* we can avoid such non- relativistic case. *: …
Both the amplitude and period have relativistic shifts, but in this first set of plots, the relative excursions all have the same magnitude so that the nature of the relativistic period shifts would be more visible. …
Do Photons have Mass? - Physics Forums
Aug 24, 2015 · What is “relativistic mass,” and do photons have it? Relativistic mass is a concept that attempts to describe the increase in a particle’s energy as its velocity approaches the speed of light.
How Can We Derive the Relativistic Rocket Equation?
May 27, 2021 · The discussion revolves around deriving the relativistic rocket equation, which is an extension of the Tsiolkovsky rocket equation for scenarios involving relativistic speeds. Participants …
Relativistic Electrons: Kinetic Energy & 20keV Threshold
Apr 28, 2005 · The discussion revolves around the kinetic energy threshold at which electrons are considered to exhibit relativistic speeds. Participants explore various interpretations of "relativistic" in …
All About the Einstein Field Equations - Physics Forums
Feb 26, 2024 · The Einstein Field Equations (EFE) are a set of ten interrelated differential equations that form the core of Einstein's general theory of relativity. These equations describe how matter and …
Calculating Relativistic Length of a Moving Spaceship
May 5, 2008 · The discussion revolves around calculating the relativistic length of a spaceship moving at a significant fraction of the speed of light (0.80 c) as observed from a planet. The original poster …
straightforward derivation of relativistic expressions for the mechanical momentum, kinetic and total energies, and mass–energy equivalence (including potential energy) which does not require any …
Relativistic velocity addition and signs • Physics Forums
Apr 27, 2014 · Explore resources on relativistic dynamics and collision scenarios Investigate the implications of velocity addition in different reference frames Students of physics, educators teaching …