The New Encyclopędia Britannica, Volume 19Encyclopaedia Britannica, 1981 - Encyclopedias and dictionaries |
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Page 209
... coloured glasses . Solution and colloidal colours in glass . Normally , in the visible region , only ions that give rise to colour need be considered when studying the transmission properties of glass because the characteristic ...
... coloured glasses . Solution and colloidal colours in glass . Normally , in the visible region , only ions that give rise to colour need be considered when studying the transmission properties of glass because the characteristic ...
Page 283
... coloured hue of pale yellow in the late summer and early fall . Curing of shoots to a yellowish colour is characteristic of the more arid grasslands ; those in more humid areas turn gray more rapidly . The grow- ing season varies in ...
... coloured hue of pale yellow in the late summer and early fall . Curing of shoots to a yellowish colour is characteristic of the more arid grasslands ; those in more humid areas turn gray more rapidly . The grow- ing season varies in ...
Page 572
... colour caused by bro- mination of the organic molecule , or by its reaction with fuchsine dyes in the presence of sulfurous acid , to give a deep blue colour . A more common test involves heating of the sample with dilute sulfuric acid ...
... colour caused by bro- mination of the organic molecule , or by its reaction with fuchsine dyes in the presence of sulfurous acid , to give a deep blue colour . A more common test involves heating of the sample with dilute sulfuric acid ...
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