The Encyclopedia Americana, Volume 7Grolier, 1985 - Encyclopedias and dictionaries |
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Page 115
... produced by reflection , while refraction in the ends of vertical crystals R. JENSEN produces the circumzenithal arc , which is often more brightly colored than the rainbow . Hori- zontally floating crystals produce various non ...
... produced by reflection , while refraction in the ends of vertical crystals R. JENSEN produces the circumzenithal arc , which is often more brightly colored than the rainbow . Hori- zontally floating crystals produce various non ...
Page 204
... produced in England for use in the colonies . 0100 The 1787 Fugio copper cent was the first coin is- sued under authorization of the U. S. government . The Excelsior cent , designed for New York state in 1787 , carried the image of the ...
... produced in England for use in the colonies . 0100 The 1787 Fugio copper cent was the first coin is- sued under authorization of the U. S. government . The Excelsior cent , designed for New York state in 1787 , carried the image of the ...
Page 463
... produced by the pyrolysis of an organic fiber . As it passes through the furnace , the fiber is heated to about 2300 ° C ( 4170 ° F ) in the absence of oxygen . Volatile substances are driven off as gases , and the residual carbon is ...
... produced by the pyrolysis of an organic fiber . As it passes through the furnace , the fiber is heated to about 2300 ° C ( 4170 ° F ) in the absence of oxygen . Volatile substances are driven off as gases , and the residual carbon is ...
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