Big Numbers - How many grains of sand?
An exhibit about estimating big numbers.
Big Numbers - How many is a million?
A million dots to count.
Cars race down two tracks - one straight, the other in the shape of a cycloid curve - which wins? You can also race two cars down the
cycloid track to find the link with a pendulum clock.
Use a loop of string to draw many different ellipses.
Playing snooker on this special table demonstrates some properties of the ellipse.
A pen is attached to the arm of a pendulum. It draws on a piece of paper attached to another moving arm, producing complex and stunning
How do locks work? We can make many different combinations of keys but only one will work.
A laser beam traces a shape on a screen. The shape is produced by the mixture of an up and down motion and a side to side motion, each
vibrating at a particular frequency. When the frequencies are in certain ratios we see beautiful patterns.
Probability (Ball Bearings)
Pour buckets of ball-bearings into this pin table. The balls bounce around randomly, but produce a distinctive 'normal distribution' shape
as they pile up.
Wheels with Corners
Un-round wheels which roll well show why 50p and 20p coins work in slot machines.