LEGO Difference Engine
Andrew Carol has created a difference engine to calculate 2nd order polynomials to 3 digits OUT OF LEGO BRICKS! While this may not sound much, building such a beast out of plastic parts is a huge challenge, as a difference engine needs very accurate movements to work properly. Andrew is also investigating the possibility of expanding his engine to do 4 digits. Anyway, read more about it by clicking on the picture above.