Marvelous Machines: A Magic Lens Book
by Jane Wilsher
5 out of 5 stars
Have you ever wondered what makes machines work? How do they function and move? How do cell phones work? How do submarines dive and rise again? What happens when you start a car engine? This book explores common machines that we take for granted, and explains the basics of how they work using weight, friction, gravity, electricity, fuel, and magnetism. There are bicycle gears, microwaves, planes, telescopes, elevators, and even robots!
Continue reading








