How Do They Do That?

Product Description

What an amazing world we live in - space rockets, aeroplanes, televisions, mobile phones, giant bridges, wonderful books and even fresh drinking water on tap! But have you ever stopped to think about how it all happens? For instance, why doesn't that giant ocean liner sink to the bottom of the sea, and exactly how do we harness the fantastic power of electricity that allows us to turn a light on at the flick of a switch?