The last worm can dig into concrete. This machine is a super Mechanical Advantage Machine. First gear spins at 180 RPM and last spins once in 37 days. Total Mechanical Advantage almost 10 million, 25^5.

Magical Table. Converts to Square table when extra person arrives. Theoretically we can convert any table to any table. Proved by Erik Demaine (never went to school) youngest professor of Math in 2007

Tangram is one of the most popular dissection puzzle in the world. A dissection puzzle is transformation/tiling puzzle where you take a set of given pieces and assemble in different ways to produce different various shapes. Interesting isn’t it? It was invented in China and then carried over to Europe […]