## Unscheduled Post: The Silver Ratio

John Cook on The Endeavour has just mentioned the wonderful silver ratio. As this is probably my favourite number I can’t resist the chance to put up some pictures. The silver ratio: ,… Continue reading

## How do shapes fill space?

One of my main activities at the moment is making toys and materials for an interactive tilings and geometry exhibit at the this year’s Royal Society Summer Science Exhibition.  The title is above.… Continue reading

## WoW 7: The secret life of numbers

Numbers are one hell of a powerful idea, and some idea of them seems to predate a lot of other intelligence traits. Even young chicks have some ability to count. (this story was… Continue reading

## Interesting Manhole covers

Its been a busy week workwise, and so a slow week as far as the blog is concerned. So I give you some easily missed art.  This is a job I would love,… Continue reading

## WoW 6: Gorgeous 4d graphics

At some point I should write something about 4d polytopes. They are an incredible work of the human imagination. There are a few places you can find good information on them, just google… Continue reading

## Building Mathematics: Sculpture system No. 5

[Update 15/1/10: More pictures (in the snow!) now up] [Update 16/3/10: A second sculpture built in Newcastle] [Update 13/5/10: Volcanic background] Can you get children and young people to build mathematical scultptures in… Continue reading

## WoW 4: Fractals

I am often a bit rude about fractal art.  With the right software it becomes easy to create interesting, attractive, complicated images without much thought to what is happening.  It is unfair but… Continue reading

## Unscheduled Post: Hyperbolic Polydron

What happens when you put seven equilateral triangles round a point?   Inspired by sumidiot who was himself inspired by division by zero who were making paper hyperbolic soccer balls, I thought I would put… Continue reading

## Angle sum formulae

Only a short post this week.  I am on holiday for a few days from tomorrow.  Yippee! In playing with algebraic equations I found myself wanting the angle sum formulae: Being a forgetful… Continue reading

## Unscheduled Post: Visualising 3D

I cannot resist replying to a post in Cosmic Variance: Why Can’t We Visualize More Than Three Dimensions? The comments section says much of this already, in addition to the wonderful: Your better off… Continue reading

## WoW 2: vZome

The new website of the week: This week we have cowinners.  First one to realise gets the prize!  If you have found my ramblings of interest then you probably already know the zometool… Continue reading

## Surfaces 2: Algebraic Surfaces

Some exploration of algebraic surfaces and how to design them.