In a previous post I talked about shapes of constant width. I didn't know of any other coins besides the UK 50p and 20p that had the property of being the same width all the way round without being circular.
Well I was recently given this coin instead of 20p:
I recently saw Avatar in 3D and 'forgot' to hand my glasses back in at the end. I thought I knew how this technology worked so I was very surprised when I started doing some experiments.
I saw Avatar at a Vue cinema that recently had 3D installed and the way it works is quite different to the IMAX. Continue reading →
I bought these magnetic balls off eBay and I've made loads of cool stuff with them.
Trouble is, after I've made one cool thing I have to destroy it before I can make another cool thing. So this blog will also serve as a photographic record of my achievements.
Let's get started then. These are the balls in an unordered state:
And here they are as a Möbius Strip:
