Surrey Physics Blog

The blog about physics at the University of Surrey

Science is international

Science is an international activity. Starting in about a month I will be teaching partial differential equations to our second years, and many of the equations I will be teaching are named after their discoverers, mostly French guys from the early nineteenth century. Needless to say the equations that govern electromagnetism in France in the […]


Christmas, the perfect time to read up on the failure statistics of A/C units of Boeing 720 airliners

Trans Polar Boeing 720 Söderström

In addition to eating too much, watching too much rubbish tv, and maybe drinking a little too much too, I have been reading a paper on the statistics of times-between-failures of air conditioning units of Boeing 720 airliners. These airliners are now obsolete, as I guess are the air conditioning units – the paper is from 1963. But the paper is a classic, the maths in it is relatively formal but the idea is simple.

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