The Encyclopedia Americana, Volume 7Grolier, 1995 - Encyclopedias and dictionaries |
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Page 112
They appear at a height of about 50 miles ( 80 km ) and re- main in sunlight when the area below has become dark . Clouds Outside the Troposphere . Occasionally clouds are found very much higher above the earth's surface than clouds are ...
They appear at a height of about 50 miles ( 80 km ) and re- main in sunlight when the area below has become dark . Clouds Outside the Troposphere . Occasionally clouds are found very much higher above the earth's surface than clouds are ...
Page 240
As society has become more com- plex , the value of higher education has become more evident . Conditions that make higher education essen- tial to society also make it essential to the indi- vidual . Society needs professional men and ...
As society has become more com- plex , the value of higher education has become more evident . Conditions that make higher education essen- tial to society also make it essential to the indi- vidual . Society needs professional men and ...
Page 260
Some show lower viscosity with increased speed of stirring but become al- most solid when stirring stops . This phenom- enon , called thixotropy , occurs in substances such as oil well drilling mud and nondrip paint .
Some show lower viscosity with increased speed of stirring but become al- most solid when stirring stops . This phenom- enon , called thixotropy , occurs in substances such as oil well drilling mud and nondrip paint .
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