Riding into a black hole is a fun mental exercise.  General relativity predicts* that an observer who falls freely into a large black hole will have no means with which she can establish whether…

This blog required programming.  The basic idea is to have four degrees of freedom for the four parameters living inside a four dimensional quaternion.  Four for loops did the trick. The…

In this sorry age for Supersymmetry (SUSY) phenomenologists, it is quite easy to step on an aching toe while discussing the results of the Large Hadron Collider experiments, whose results have let…

In the previous blog post we discussed entropy. I provided you with a less well-known perspective on entropy and demonstrated that this generic perspective is fully compatible with the more…

A few hundred thousand billion free-floating, Earth-sized planets may exist in the space between stars in the Milky Way, argues an international team of scientists in Astrophysics and Space Science.…

A little group theory a la QFT Demystified. David Tong's Procedure.  The Norm of the quaternion is --------------. The Norm of a biquaternion is --------------. Can I solve a problem is…

Derive SR from 1.Preservation of Causality and 2.The Constancy of the speed of light. with a focus on the spacetime interval. (like Brian Cox)

Since "spacetime" is simply a term for a space that has a component we call "time", we need only concentrate on spaces in a somewhat general sense.  Now, as Derek Potter, on this site, pointed…

I recently found a physics book I've enjoyed so much I'd like to share it with others interested in physics. Because physics is a hobby for me and something I've studied in the past, I enjoy books…

CONTENTSPART A: Introduction: does the inertia of a body depend upon its energy content?PART B: The Toolkit: mathematical and physical assumptions PART C: The Thought Experiment and the Word…