Convention, Volume 39,Bagian 2;Volume 60 |
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Halaman 553
... illumination is more efficient than other means because in its ap- plication more efficient and higher candlepower units can be used , thus reducing the number of units necessary and , at the same time , the cost and maintenance . This ...
... illumination is more efficient than other means because in its ap- plication more efficient and higher candlepower units can be used , thus reducing the number of units necessary and , at the same time , the cost and maintenance . This ...
Halaman 582
... illumination . Suppose two reflectors , X and Y , are A ' feet apart and A feet high . Their distributions will then secure uniform illumination . If the reflectors are moved farther apart to positions X ' Y ' , the points of maximum ...
... illumination . Suppose two reflectors , X and Y , are A ' feet apart and A feet high . Their distributions will then secure uniform illumination . If the reflectors are moved farther apart to positions X ' Y ' , the points of maximum ...
Halaman 814
... illumination intensity of one lumen per square foot of surface lighted , all that is necessary to determine the intensity of illumination which will be delivered to a given surface by a given lamp , is to divide the total lumens ...
... illumination intensity of one lumen per square foot of surface lighted , all that is necessary to determine the intensity of illumination which will be delivered to a given surface by a given lamp , is to divide the total lumens ...
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