The New Book of KnowledgeGrolier Incorporated, 2002 - 21 sider 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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Side 109
... produce an upward force called lift . The force of lift must be strong enough to overcome the force of gravity , the force that pulls objects toward the ground . A third force , called thrust , is required to move the plane through the ...
... produce an upward force called lift . The force of lift must be strong enough to overcome the force of gravity , the force that pulls objects toward the ground . A third force , called thrust , is required to move the plane through the ...
Side 290
... producing one of the three primary colors of light : red , blue , and green . These colors can be combined to produce all the colors an artist might need . Using a computer graphics program , the artist tells the computer which pixels ...
... producing one of the three primary colors of light : red , blue , and green . These colors can be combined to produce all the colors an artist might need . Using a computer graphics program , the artist tells the computer which pixels ...
Side 333
... produce fruit that is exactly like the parent tree's . Trees for orchards are therefore produced by budding or grafting . A bud or a short piece of a twig taken from a parent tree is inserted into a young seedling tree so that it grows ...
... produce fruit that is exactly like the parent tree's . Trees for orchards are therefore produced by budding or grafting . A bud or a short piece of a twig taken from a parent tree is inserted into a young seedling tree so that it grows ...
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