Tags » Relativity

Four-velocity of a particle in hyperbolic motion

References: Griffiths, David J. (2007), Introduction to Electrodynamics, 3rd Edition; Pearson Education – Chapter 12, Post 27.

We can now return to a particle travelling on a… 199 more words

Physics

Four-velocity's square is a universal constant

References: Griffiths, David J. (2007), Introduction to Electrodynamics, 3rd Edition; Pearson Education – Chapter 12, Post 26.

The four velocity is defined as


so the square is… 79 more words

Physics

Four-velocity versus ordinary velocity: an example

References: Griffiths, David J. (2007), Introduction to Electrodynamics, 3rd Edition; Pearson Education – Chapter 12, Post 25.

Here’s an example of calculating the ordinary and four-velocities of an object. 165 more words

Physics

Four-velocity again

References: Griffiths, David J. (2007), Introduction to Electrodynamics, 3rd Edition; Pearson Education – Chapter 12, Post 24.

Griffiths’s approach to the relativistic four-velocity is similar to… 258 more words

Physics

Why You Can't Tell Time With a Camera

Sun dials aren’t meant to be relative to you.

Ah, art, you reveal your true colours!

Human Wisdom Vs. Book Knowledge

Search Engine Oh-my-god...

… SNOW!!! Four flakes of it flying horizontally into Dublin Bay… We are all doomed!!!

Padraic has been Search Engine Operator for Iarnrod Eireann for 27 years.  159 more words

Ireland