Neil Ardley

Text and pictures introduce musical instruments from early times to the present--from pipes and flutes to electronic synthesizers.

Explains the basic principles of magnetism and suggest a variety of experiments which use magnets.

Introduces the principles of force and energy and includes a variety of simple experiments.

Illustrations and text demonstrate how machines do what they do--from the simplest lever to the smartest phone--and also shows how the concept behind one invention is linked to the concept behind another. Using the humorous analogy of a wholly mammoth to illustrate principles, the author offers even the least technically minded reader a window of understanding into the complexities of today's technology. -- Adapted from dust jacket flap.