Lighting Fixtures and Lighting Effects |
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Page 2
... electric - filament lamp , in which the light source is completely confined in a glass bulb , the potentiality of light as an expressive medium very greatly increased . But even this is not an adequate explanation of the lack of ...
... electric - filament lamp , in which the light source is completely confined in a glass bulb , the potentiality of light as an expressive medium very greatly increased . But even this is not an adequate explanation of the lack of ...
Page 73
... electric - filament lamps have introduced the possibilities of light control undreamed of through- out the ages of feeble open flames . Now the light source is safely enclosed in glass . The filaments are concentrated , so that scien ...
... electric - filament lamps have introduced the possibilities of light control undreamed of through- out the ages of feeble open flames . Now the light source is safely enclosed in glass . The filaments are concentrated , so that scien ...
Page 86
... electric - filament lamp is so generally adaptable , owing to its simplicity , safety , luminous efficiency , and variety of size , that it is now almost universally used for the lighting purposes which are considered in these chapters ...
... electric - filament lamp is so generally adaptable , owing to its simplicity , safety , luminous efficiency , and variety of size , that it is now almost universally used for the lighting purposes which are considered in these chapters ...
Page 96
... electric - filament lamps , the extensive background of preceding centuries is impor- tant in various ways . Mankind has inherited much from Nature and in Nature are found the inspirations for man - made things . The natural world was ...
... electric - filament lamps , the extensive background of preceding centuries is impor- tant in various ways . Mankind has inherited much from Nature and in Nature are found the inspirations for man - made things . The natural world was ...
Page 176
... electric - filament lamps have replaced the candles . Here is a departure , because modern civilization demands ... electric lamps did not even exist . Furthermore , the extreme brilliance of the electric filaments and much greater ...
... electric - filament lamps have replaced the candles . Here is a departure , because modern civilization demands ... electric lamps did not even exist . Furthermore , the extreme brilliance of the electric filaments and much greater ...
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Common terms and phrases
acanthus adaptation aperture appear architecture areas artistic background blue bowl brightness Byzantine art ceiling centuries chandeliers chapters church civilization classic art colored light colored-glass concealed crystal glass daylight decorative scheme desired developed diffusing glass dining room direct and indirect direct light dome electric candles electric filament electric lamps emitted esthetic flames Flemish forms French Renaissance furniture glassware Gothic green illuminated illustrated in Fig indirect component influence installed interiors introduced Jacobean lantern light sources lighting effect lighting equipment lighting fixtures Louis XIV luminous medium metal modern lighting motifs natural obtained oil lamps orange ornament painted panels period style pigments portable lamps possibilities powerful primary primary colors produced pure colors reflected reflector Renaissance result Roman Romanesque satisfactory shades shadows spirit supply surfaces symbolisms textiles tints tints and shades tion usually utilize variety various vase viewpoint violet wall boxes walls Western Roman Empire yellow
Popular passages
Page 80 - ... because BD is parallel to CE, the alternate angles ADF, DAE are equal. But the angle ADF has been proved equal to DAF ; hence the angles DAF, DAE are equal to each other. Scholium. It is a law in Optics, that the angle made by a ray of reflected light with a perpendicular to the reflecting surface, is equal to the angle which the incident ray makes with the same perpendicular. Hence, if GAH represent a concave parabolic mirror, a ray of light falling upon it in the direction EA would be reflected...
Page 26 - ... colors toward the violet end. The following list includes all the color names which I have been able to find in modern English, in which the color reference is thoroughly dissociated, in common usage, from reference to any specific object. For the reds and yellows and their various shades : red, ruddy, rubicund, russet, roan, auburn, carmine, crimson, scarlet, brown, bay, sorrel, dun, yellow, tawny, sallow, lurid. (To these might be added buff, maroon, vermilion, and perhaps such words as magenta,...
Page 94 - ... accustomed. Manufacturers have introduced wonderful "textural" improvements not only in the glass itself but also by superficial finishes. Other glassware that was merely glass forced persons of discriminating taste to the use of fabrics and parchments.
Page 87 - ... be entirely different in spectral character. For example, yellow light may be produced by subtracting from the radiant energy all spectral colors except the yellow, or except the red and green in the proper proportions.
Page 94 - By introducing such effects and many others in illuminating glassware, the doorways which were closing upon glassware are again opening.
Page 60 - In any case, it shows that the color of the light has a great deal to do with the appearance of a colored paint.
Page 50 - In this investigation 35,955 observations were recorded, each one being made independently, amid neutral-gray surroundings, and as quickly as possible, in order to avoid as far as possible the influence of associations.
Page 21 - Nevertheless, many are still vivid and they must be taken into consideration if we are to understand fully the powers of light and color.
Page 87 - The most definite colors, with their approximate spectral limits, are given in the first two columns of Table II. In the third column...
Page 46 - Bright surroundings, such as highly illuminated walls, ceiling, and furnishings, are stimulating.