Cold and humid

Saturday was one of those days that the Waikato winter is famous for. Cold and damp – by damp I mean humid as well as raining – in fact the kind of weather that reminds you that you are living in an area that used to be one massive swamp. The sort of dampness that […]

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Heads I win, tails you lose

The comment on my previous entry raises a few  issues with the way we feel heat.  (NB for those who normally read this blog on http://www.sciblogs.co.nz , you’ll need to go onto physicsstop to see the comment – https://sci.waikato.ac.nz/physicsstop )  How hot we feel has more to do than just what the temperature is.  Anyone who […]

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BBQ Physics

Here’s another little bit of physics seen in everyday stuff.  When disconnecting the gas cylinder to our camp stove while on holiday, I got a bit of a shock at how cold it was.  It shouldn’t have shocked me – that’s how it should be.  When gas is made to expand it cools down. And in […]

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Climate change

I feel that, as a physicist, I should be making some reasonable and informed comment on the Copenhagen summit. After all, climate is immensely physicsy. We have fluid flow, conduction, convection and radiation of heat, interaction of electromagnetic radiation with electrons in molecules, scattering of light by small particles, solar activity (on second thoughts, scrub […]

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Risky things

I love the headline at the end of last week ‘Wellington quake risk halves’. As if you can wake up one morning and find that the chances of an earthquake happening today are suddenly half of what they were yesterday just because someone says so.  What next – someone decreeing that summer will last 12 […]

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The end of the week…

Have you ever had one of those days when you have worked flat out all day and seem to have accomplished nothing? I think that’s today.  My desk looks like a tornado has been through the office. Now, I wonder, statsitically speaking, how many tornados I’d need to come through before one picked up all […]

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Slippery ice

First – sorry blogging has slowed down a bit in recent days – busy time at the university having to teach courses and prepare for next semesters courses and get ready for a major conference all at once. So I’ll keep this one short. The wild weather over the last couple of days has brought […]

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