Author(s): Anne Rooney; Mark Bergin (Illustrator)
Simple machines are around us all the time and we use them every day. Many are built into complex machines, but the simple machine is still in there doing its job. Discover how simple machines enable practically everything around us to work, allowing us to travel in wheeled vehicles, life very heavy objects, put things together, and take things apart. Excerpts From Experts: The Spinning Jenny, a spinning wheel that could produce many threads at the same time, revolutionized the fabric industry. A bridge built in Amsterdam, Holland, in 2016, was put together by robots from parts produced in metal using a 3-D printer. Ingenious! Archimedes' screw has been used for at least 2,700 years. Turning the screw scoops up water and brings it up along the shaft of the screw. Book jacket.