Galaxies come in three shapes – Spiral (2/3 rds of all galaxies), Elliptical (about 1/3rd of all galaxies) and Irregular (no well defined shape). Scientists have used dark matter theory to predict the menagerie of...

# Category - Physics

Quantum theory, relativity, general physics, applications, fun stuff.

A frame of reference cannot ‘travel at light speed’. That frame would (if it DID make it to the c) see space collapse to a point in the direction of travel. So – there is nothing for it to ‘see’...

The photon’s time doesn’t ‘stop’ – as far as we can tell. Relativity doesn’t have frames of reference moving at c, so it’s not possible to define how fast time passes for a...

Understanding the two theories of relativity is not just a pastime for physicists. There is something existential and comforting about imagining ‘riding on a light wave’ and how the Universe might look to such an observer...

Starting with the de-broglie wave equation (1) The MINUS SignThe minus sign denotes the fact that if we hold t constant and increase x we are moving “to the right” along the function, whereas if we focus...

If you are looking to get back into the exciting world of physics (without skipping the math), here is a list of books (that I have personally tried and tested): Amazon.com Widgets Getting your feet wet Road to Reality – Roger...

Problem Set 1 These are the contents of our first meeting – held on June 9th, 2015 Problem Set 1 Download Zip Recommended Reading List James Nearing – Mathematical Methods for Physics The Road to Reality –...

What exactly IS a DIFFERENTIAL EQUATION and how does it arise in the first place? Most physics courses start by taking the equation as a GIVEN – not bothering to explain how it comes about in the first place. And then, you...

Relativity applies to all branches of physics. However, it is more of a geometrical framework – on which the laws of physics can be described. Calling relativity physics would be like calling Euclidean Geometry...