The New Book of Knowledge, Volum 1Grolier Incorporated, 1989 - 21 sider An illustrated encyclopedia containing over 9000 articles on history, literature, art and music, geography, myths and legends, mathematics, science, hobbies, holidays and festivals, games, sports, crafts, medicine, law, government, industry, politics, and other topics. |
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Side 105
... motor is shut off by a timing mechanism , and the airplane is free to glide back to earth . Free - flight models ... electric motors ( called servos ) to move the airplane's controls . The pilot , using a hand- held transmitter , moves ...
... motor is shut off by a timing mechanism , and the airplane is free to glide back to earth . Free - flight models ... electric motors ( called servos ) to move the airplane's controls . The pilot , using a hand- held transmitter , moves ...
Side 544
... electric motor . It has many more mov- ing parts that can wear out . In its early days , it was tricky and temperamental . It frequently broke down or simply refused to start . But there are good reasons why it eventually be- came the ...
... electric motor . It has many more mov- ing parts that can wear out . In its early days , it was tricky and temperamental . It frequently broke down or simply refused to start . But there are good reasons why it eventually be- came the ...
Side 545
... electric starter , an electric motor that starts the gasoline engine . Before the devel- opment of the electric starter , the gasoline en- gine had to be started by cranking it by hand . This took considerable strength and was also ...
... electric starter , an electric motor that starts the gasoline engine . Before the devel- opment of the electric starter , the gasoline en- gine had to be started by cranking it by hand . This took considerable strength and was also ...
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