I've been experimenting with doughnuts of different dimension. I think I'm going to go for one with a slightly larger ring in the centre than the one here. That'll be tomorrow as I'm taking #1 son out to the theatre so we can play with the lights. Should be fun!

I had written a post yesterday about the mathematics of the torus design – but managed to loose it. If you follow me on twitter you proabably heard that I posted it- multiple times! I'll have another go at uploading it, the maths behind the model is really interesting and it is good to share!

If you receive the blog posts email you'll have noticed the <!–break–> tag in the middle of the text. It was trying to get rid of that that killed the maths post. I have a couple of other solutions so fingers crossed the stray tag should be gone soon.