Category Archives: Blog

Ultraviolet catastrophe

According to the Rayleigh-Jeans’ Law, Eq 1: Rayleigh-Jeans Law where B is the power emitted let unit area per unit solid angle per unit wavelength for a given wavelength and temperature, T is the temperature of the body, lambda is the wavelength of radiation emitted by the body, and k is Boltzmann’s constant. This classicalContinueContinue reading “Ultraviolet catastrophe”

Liquid crystal displays (LCDs)

These types of displays work in a clever way. Light passes through a polarising filter, through a liquid crystal, and then through a second polarising filter with the plane if polarisation orientated 90° to the first. The light then reflects off a mirror and follows the return path through the polarising filter, liquid crystal andContinueContinue reading “Liquid crystal displays (LCDs)”

The most stressful job in the world

… is not teaching. Well, that’s my experience, but I understand everyone and every situation is unique. I have had the good fortune of always teaching in grammar schools (except when I was training). I’ve heard horror stories from colleagues about how stressful it can be working in other schools, managing poor behaviour, jumping thoughContinueContinue reading “The most stressful job in the world”

Being kind on the internet

On Wednesday I uploaded two videos about issues with the transformer equation taught to GCSE and A Level students. Little did I expect but YouTube’s algorithm picked them up and thousands of people watched them. Consequently, dozens of people decided to comment on them. That’s fine, of course, but many of the comments were actuallyContinueContinue reading “Being kind on the internet”