"Exploring Science: What Is Flight?: Birds, Planes, Kites, Balloons; With 18 Easy-To-Do Experiments and 240 Exciting Pictures" - "" ("Mellett Peter")(Pevná vazba) - diskuze

"This title explores the science that humans have developed to enable them to fly. Find out how a jumbo jet carrying 500 passengers can stay in the air, and how a hummingbird can hover over a flower with pinpoint precision. It includes experiments and inside-view diagrams that explain the mechanics of drag, lift and
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