The Chosun Ilbo on MSN

LEGO's smart brick: 50-year innovation unveiled

When a small square ‘Smart Brick’ is combined with LEGO blocks assembled in the shape of a car, the sound of a starting ...
Nanowerk

Nanotechnology and the concept of friction

1.1 What is friction? Take this everyday example: when a coffee mug rests on a flat table, the kinetic frictional force is zero. There is no force trying to move the mug across the table, so there is ...