Tag Archives: light

Olber’s Paradox

Olber’s paradox dates back to the 16th century and is often cited as evidence to support the idea that the universe had a finite beginning in the form of a Big Bang.  The paradox concerns the idea that a dark night sky conflicts with the idea that the universe is infinite, eternal and static.   It is named after […]

Einstein and Bohr and the nature of reality

Perhaps the most important scientific debate of the 20th Century was that which took place between Niels Bohr and Albert Einstein during the 1930’s and 40’s. At issue was the very nature of reality. By that time Bohr had become convinced that the laws of physics had to be different on the scale of the […]

James Clerk Maxwell

Can electric charge exist in the absence of a charged particle?

Up until the 1820’s the only magnets that were known were lodestones and magnets made of iron such as compass needles.  Then in 1820 Hans Christian Oersted was conducting a demonstration of the heating of a wire by means of an electric current.  Coincidentally he also planned a demonstration of the effects of magnetism for […]

The Bandwidth of the Photon ?

James Clerk Maxwell was the first person to connect light with other forms of electromagnetic radiation and in so doing he showed that the bandwidth of electromagnetic radiation extends beyond that of just light.   Since then the spectrum has been broadened to include radio waves, microwaves, infra-red, visible light, ultra violet radiation, X-rays and gamma […]