Physics Stop

The Electric Car and metrics

Marcus Wilson Sep 01, 2009

I was reading in the New Zealand Herald at the weekend about a curious problem relating to electric cars. But it's not a technological problem - it's one of language.My car runs on petrol. It's fuel economy is pretty easy to measure. Start with a full tank, take a note of the odometer, run it until the gauge gets … Read More

Blue sky

Marcus Wilson Aug 31, 2009

I'm still working on the problem of why is the sky blue?  Now, I've already told you its because the short-wavelength blue light is scattered more than the long-wavelength red light, but why are short wavelengths scattered more than longer ones? In words suitable for a blog.I could do some maths to show you that's the case, but … Read More

The scientific method

Marcus Wilson Aug 28, 2009

This morning we had a school group visit us from Whakatane - about 30 year 10 students (14 and 15 year olds) - they carried out some activities in Chemistry, Earth Sciences and Physics. I led them (as two groups) in a physics activity involving catapults.After doing the boring bit (talking about how energy is transferred from one form to … Read More

Landing gear failure

Marcus Wilson Aug 27, 2009

Last night our cat failed to live up to the reputation of his species for executing four-footed landings when he lept off a perch in hot pursuit of a piece of string, landed on his front paws with too much forward rotation, performed a graceful flick-flack and thuded head first into the CD rack. After a couple of seconds looking … Read More

What’s happening in Geneva?

Marcus Wilson Aug 26, 2009

In the last few days I've had a couple of people ask what is happening with the Large Hadron Collider.Well, if you want the latest news, you can grab the press releases from http://lhc.web.cern.ch/lhc/News.htm . In short, they are doing various tests, and finding and addressing various problems as they arise. It now looks like November before the collider is 'fired-up', … Read More

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