Tag Archives: speed of light

How far is it around the earth?

How far is it around the earth? More specifically, if I was to set off from here in Wokingham following a great circle route, how far would I have to travel before I found myself back here in Wokingham? Well, if you look it up on Google the circumference of the earth is near enough […]

Relativity and Orbital Motion or How to win at the Game of Monopoly Using Special Relativity

The Muon is a small electrically charged particle, much like an electron only more massive.  Muons are especially useful when it comes to testing and measuring the effects of special relativity. This comes about for a number of reasons.  Firstly the muon carries an electric charge, which means that it can be manipulated by means […]

An experiment to determine whether the universe is expanding

In the 19th century the German physicist Joseph von Fraunhofer (1787-1826) discovered that the solar spectrum contains a number of dark bands.  Fraunhofer made a detailed study of the wavelengths of these lines and later it was discovered independently by Bunsen and Kirchhoff that each chemical element has a characteristic set of these so called […]