Thursday 15 July 2010

Sundial

I went to Amble in Northumberland. Next to the harbour is this large modern sundial. The notice explaining sundials is very interesting. It explains why a sundial doesn't show perfect clock time. Part of that follows on from my previous post which noted that true sun-highest-in-the-sky midday is different in Wigton compared to London. This display panel also explains that the height of the sun in the sky (time of year) has an effect too. Click on the picture to enlarge it.


Friday 2 July 2010

Climate change on Panorama

Last week's Panorama programme on BBC1 was about the science of climate change. Now Panorama is a far more tabloid style programme than was the case when I used to watch it 30 years ago. However, I was interested that the supposedly disagreeing scientists all seemed to beleive that the world is warming. The only people who didn't believe in global warming were members of the public. Small sample size, for sure, but interesting none the less. The controversy amongst the scientists seemed to be the validity of the "hockey stick" global temperature graph.