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Fun with Google Translate
A surprising conclusion after playing with Google Translate; or maybe it’s not that surprising.
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Do you find these derivation videos helpful?
Do you find my derivation videos helpful? Please let me know what you think?
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The Class That Doesn’t Care
Before the claxon, still pitch black,Despite the hour, duvet’s peeled back,And limping through the bathroom door,The silent mantra, “one day more.”The sun is hiding while teeth brushedAnd floss and rinse and toilet flushed,And keeping silent in the shower,Won’t wake my daughter at this hour.Dressing smartly, eating cornflakes,Cycling ‘fore anyone else wakes.Get to work and throughContinue…
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Why sleep matters
Teenagers need 9-10 hours of sleep per night. Adults need 7-8 hours of sleep per night. That’s according to the Mayo Clinic. They also state that a lack of sleep increases the risk of illness after exposure to viruses. How much of an increased risk is it? According to Cohen et al (2010), the riskContinue…
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Ultraviolet catastrophe
According to the 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 classical physics equation can beContinue…
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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 andContinue…
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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 thoughContinue…
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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 actuallyContinue…
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Maintaining backwards compatibility
A hobby of mine is writing spreadsheets that maintain compatibility with archaic and obsolete software. Recently, a bug was discovered in one of my spreadsheets, which I had to fix by losing compatibility with Excel 97.
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Physics with Keith 