The New Book of KnowledgeGrolier Incorporated, 2002 - Počet stran: 21 An illustrated encyclopedia with articles on history, literature, art and music, geography, mathematics, science, sports, and other topics. Some articles include activities, games, or experiments. |
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Strana 37
... Flight People have always envied the ability of birds to fly through the air , and the first flying machines made it possible for people to make their dream of flight come true . Since ancient times there have been myths and legends ...
... Flight People have always envied the ability of birds to fly through the air , and the first flying machines made it possible for people to make their dream of flight come true . Since ancient times there have been myths and legends ...
Strana 105
... flight . The three categories of flying models are free flight , con- trol line , and radio control . Free Flight The very early model airplanes were all free- flying . That is , once they were launched , there was no way to control ...
... flight . The three categories of flying models are free flight , con- trol line , and radio control . Free Flight The very early model airplanes were all free- flying . That is , once they were launched , there was no way to control ...
Strana 562
... flight in a heavier - than - air craft . The first flight , made by Orville , was short - 120 feet ( 36.6 meters ) in 12 seconds - but it was fol- lowed by three more flights with the brothers taking turns . The last flight that day was ...
... flight in a heavier - than - air craft . The first flight , made by Orville , was short - 120 feet ( 36.6 meters ) in 12 seconds - but it was fol- lowed by three more flights with the brothers taking turns . The last flight that day was ...
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