[ noun ] an artificial source of visible illumination
Used in print(Francis J. Johnston and John E. Willard, "The...)
Liter quantities of Mallinckrodt , low sulfur , reagent grade carbon_tetrachloride were saturated with * * f and * * f and illuminated for about 50 hours with a 1000 watt tungsten lamp at a distance of a_few inches .
Two types of light source were used , a thousand watt projection lamp and an AH6 high pressure mercury arc .
In series /1 , the relative light intensity was varied by varying the distance of the lamp from the reaction cell over the range from 14.7 to 29.2 cm. .
The last column shows the rate of exchange that would have been observed at a relative intensity of 4 ( 14.7 cm. distance ) calculated on the assumptions that the incident light intensity is inversely proportional to the square of the distance of the lamp from the cell and that the rate is directly proportional to the incident light intensity .(A. N. Nagaraj and L. M. Black, "Localization of...)
Stained or unstained sections were examined under dark_field_illumination in a Zeiss fluorescence microscope equipped with a mercury vapor lamp ( Osram_HBO 200 ) .
[ noun ] (housing) a piece of furniture holding one or more electric light bulbs
Used in print(Gerald Green, The Heartless Light....)
Flanked by marble urns and alabaster lamps , they seemed to be posing for a tribal portrait .
[ noun ] Last name, frequency rank in the U.S. is 7398