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This video presents a brief history of the development of flight and air travel with its advantages and convenience. How valid are safety concerns? What disadvantages accrue to traveling by plane? This video presents a comparative traveling competition between an automobile and a plane, indicating the many factors that are involved-distance, procedures, regulations, and proximity to services.
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This video describes the principles of airplane and helicopter flight. It covers the function of jet engine, flaps, thrust, lift , drag, gravity, and air pressure. Why must the upward thrust be greater than the pull of gravity? Centripetal force and what keeps the helicopter from rotating around its propellers are also explained.
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The development of transport from walking man to modern technology. This video presents reasons why different forms of transportation are used, and recounts the history of overland travel. It shows the part technology played in the rise and decline of some types of transport and the reasons why modern means of land transport are utilized.
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This two-part series gives viewers insight into how maps were drawn and revised based on the voyages of the great explorers. Interviews with historians and cartographers are interspersed with reenactments and the voyages and discoveries.
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This 13-part environmental series examines the impact our way of living affects people, animals, plants and landscapes around the world.
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Many of the great cities of the world are, or have been, major ports, affected by the changes in shipping over the last 100 years. Different forms of water transportation and canals are identified. This segment examines how people and goods are transferred from one means of conveyance to another. The uses of ocean liners and canals are also covered.
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