Marcus’s Posts

More swimming pool physics

Have you ever thought why water is difficult to move through? What property does it have that air doesn’t, that makes it an effort to get anywhere in it? The answer is utterly straightforward, but it is worth saying: it is simply more dense than air. If you want to move through it, you’ve got […]

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Swimming pool physics

It’s summer, and for me that means the university’s 50 metre outdoor swimming pool is open. Lots of lunchtime lengths, dodging the morons who can’t cope with the concept that lanes are for lane swimming, rather than playing ball games. There’s a lot of physics that goes in with swimming. Hydrodynamics, the study of how […]

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Levitation

Last Thursday while browsing a popular NZ-based website an article caught my attention: ‘Scientists learn to levitate objects’. Images from Harry Potter films flashed before my eyes, and I thought this had to be something worth checking out. And it was, for two reasons. First, because the article is a surprisingly accurate piece of science […]

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It’s cold out there

Having lived in Waikato for five years now, I’d forgotten what cold temperatures feel like. I’ve just got back from Christmas in the UK (explains lack of blog entries) where I was reminded what winter is like: dark and cold. Minus 9 feels pretty nasty, but, how cold is that really?  

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Going around in circles

If there’s one thing that is likely to promote disharmony amongst the physics community, its the use for the f-word. That’s ‘f’ as in ‘fugal’, as in centrifugal.  Now, part of me thinks I should reconsider before writing this entry, but I have recently read a particularly unhelpful  piece on the internet written by a […]

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