Expensive cat physics

With baby Benjamin taking our attention, poor Mizuna the cat has been rather neglected recently. Unfortunately, this has proved an expensive (for us) and painful (for him) mistake. A couple of weeks ago, I noticed one morning that he was clearly in pain, and desperately trying to urinate. CLANG, CLANG, go the alarm bells. Male, […]

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How many significant figures?

The overstating of accuracy is something that physics teachers have to continually correct. Just because one’s calculator gives an answer to ten significant figures doesn’t mean one should quote it to ten significant figures. I’ve just looked up the location of Nakedbus’s Auckland City bus stop. It was very easy to do – drawing from […]

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Static electricity

Static electricity is, above all, fun, but it also can be annoying at times. I was at a conference in Queenstown last week, and was haunted by static everywhere I went. I’m guessing that atmospheric conditions were pretty dry, meaning that electric charge didn’t leak away quickly. When you know that you are going to […]

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Time travel

On Monday evening this week I managed to do a bit of time travelling while driving back home. I was driving back through one of those heavy showers that have been marauding around the place recently, with windscreen wipers full pelt on a rather wet road. However, these showers don’t last for very long, and […]

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The wonders of concrete

As I mentioned in an earlier post, one of the buildings near my office is currently being redeveloped. By redeveloped, I mean a mix of rebuilding, extending and renovation. In the last few weeks the building has been stripped back to its structural shell – pretty much all things that aren’t necessary to hold the […]

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Equipment failure

In the last couple of weeks, I’ve been working with one of our technicians tracking down what has been going wrong with one of the experiments we get our third year physics students to do. It’s on Brownian Motion. Specifically, analyze the movement of small particles suspended in water by scattering of laser light. By […]

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