The Encyclopedia Americana, Volume 7Grolier, 1989 - Encyclopedias and dictionaries |
From inside the book
Results 1-3 of 89
Page 305
... light by which we are made aware of objects or light sources . Formerly the term " color " was also applied to substances used to modify the colors of objects , such as dyes and pigments . To avoid confusion , such substances are now ...
... light by which we are made aware of objects or light sources . Formerly the term " color " was also applied to substances used to modify the colors of objects , such as dyes and pigments . To avoid confusion , such substances are now ...
Page 306
... light sources whose color temperatures range from the 3000 K of tungsten light to the 6500 ° K of so - called average daylight are all consid- ered in the range of white light when used as sources of illumination . The spectral energy ...
... light sources whose color temperatures range from the 3000 K of tungsten light to the 6500 ° K of so - called average daylight are all consid- ered in the range of white light when used as sources of illumination . The spectral energy ...
Page 312
... light at some wavelengths than others generally produces a chromatic color . If most of the light ( 90 or 95 % ) from daylight or almost any common light source is absorbed at all wavelengths except the red , and not more than 10 or 20 ...
... light at some wavelengths than others generally produces a chromatic color . If most of the light ( 90 or 95 % ) from daylight or almost any common light source is absorbed at all wavelengths except the red , and not more than 10 or 20 ...
Other editions - View all
Common terms and phrases
19th century Africa American Atlantic cod became Bogotá born Britain British church civil Clark Clay Cleisthenes Cleveland climate clocks cloture cloud clubs coal coal tar Coast Guard coeducation coelacanth coffee coinage coins coke College Colombia colonies color Colorado Columbia Columbus comets comic commercial common cold common law Commonwealth COMMONWEALTH OF NATIONS Communist countries courts developed died early East economic elected Empire England English established European example federal France French higher education important India Indian industry institutions Island known land later latitudes major ment meters miles montmorillonite mountain Museum National North Ocean organization party period plants political Population president production programs region River Roman served social South southern Soviet Soviet Union species temperature tion trade treaties Union United University usually West western World World War II York