Each title in this series takes one simple scientific principle as a basis for explaining the workings of a selection of everyday gadgets and machines. The illustrations aim to de-mystify the scientific theory and expose the workings of each machine. Focusing on levers, this book describes such terms as fulcrum, effort and load, and sets out to show how levers are used in a multitude of everyday machines, from a simple spade to a grand piano and a seesaw to a typewriter.
- ISBN10 0750202181
- ISBN13 9780750202183
- Publish Date 31 October 1991
- Publish Status Out of Print
- Out of Print 19 April 2005
- Publish Country GB
- Publisher Hachette Children's Group
- Imprint Hodder Wayland
- Format Hardcover
- Pages 32
- Language English