Numberphile is a great youtube channel about maths. They invited me and Matt Parker on to fight about the circle constant. Here it is:
Numberphile is a great youtube channel about maths. They invited me on to talk about Benford's Law. Here it is:
Here's my earlier post about Benford's Law.
Your left hand and right hand are mirror images of each other. There's no way you can position your left hand so that it looks like a right hand. It will only look like a right hand if you look at it in a mirror.
There are molecules like this in chemistry. Molecules that can't be positioned in such a way as to look exactly like their own mirror image. These are called chiral molecules. We talk about them having a handedness because they share this property with our hands. Continue reading →
I love recursion. There's something about the way it invokes infinity that makes my head spin. Droste effect images are recursive images that got their name from a Dutch company that makes chocolates and cocoa and things like that. Continue reading →
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 →
Pick a number at random from the universe. Not just from inside your head. Open a page of the financial times or look up the size of a planet; convert you height to cubits or measure the weight of your favourite book. Something like that.
Don't actually do it, it's hypothetical. But ask yourself a question. What are the chances of that number starting with a 1? Continue reading →
I know what you're thinking: what's the difference between a Venn diagram and an Euler diagram? Good question. The following diagram should clear things up:
Just to clarify, Venn diagrams have regions for all possible combinations of groups whether there are things in those regions or not. Continue reading →