 ... in front of the slit. I then saw the dark lines D change into bright ones. The flame of a Bunsen's lamp threw the bright sodium lines upon the solar spectrum with unexpected brilliancy. In order to find out the extent to which the intensity of the...  Modern Astronomy, Its Rise and Progress - Page 31by Hector Macpherson - 1926 - 196 pagesFull view - About this book
 | Albany Institute - 1864 - 348 pages
...threw the bright sodium lines upon the solar spectrum with unexpected brilliancy. In order to find out the extent to which the intensity of the solar spectrum...appeared with an extraordinary degree of clearness. I then exchanged the sunlight for the Drummond's or oxyhydrogen lime light, which, like that of all... | |
 | National Sunday school union - 1871 - 598 pages
...common salt), and found that the dark lines were replaced by bright ones ; and wishing to find out the extent to which the intensity of the solar spectrum...increased without impairing the distinctness of the bright sodium lines, he allowed the full sunlight to shine through the sodium flame, and the effect... | |
 | 1862 - 648 pages
...threw the bright sodium lines upon the solar spectrum with unexpected brilliancy. In order to find out the extent to which the intensity of the solar spectrum...appeared with an extraordinary degree of clearness. I then exchanged the sunlight for the Drummond's or oxy-hydrogen lime-light, which, like that of all... | |
 | Gustav Robert Kirchhoff - 1862 - 62 pages
...threw the bright sodium lines upon the solar spectrum with unexpected brilliancy. In order to find out the extent to which the intensity of the solar spectrum...the full sunlight to shine through the sodium flame upon the slit, and, to my astonishment, I saw that the dark lines D appeared with an extraordinary... | |
 | 1863 - 376 pages
...threw the bright sodium lines upon the solar spectrum with unexpected brilliancy. In order to find out the extent to which the intensity of the solar spectrum...appeared with an extraordinary degree of clearness. I then exchanged the sunlight for the Drummond's or oxyhydrogen lime-light, which, like that of all... | |
 | Howard Townsend - 1864 - 254 pages
...threw the bright sodium lines upon the solar spectrum with unexpected brilliancy. In order to find out the extent to which the intensity of the solar spectrum...without impairing the distinctness of the sodium lines I allow the full sunlight to shine through the sodium flame and to my astonishment, I saw that the dark... | |
 | 1865 - 778 pages
...increased, without impairing the distinctnesss of the sodium lines, I allowed the full sunlight to fall through the sodium flame, and to my astonishment I...appeared with an extraordinary degree of clearness. I then exchanged the sunlight, for the Drummond or oxyhydrogen lime light, which like that of all incandescent... | |
 | 1866 - 646 pages
...ouo twonty-niI!llo»tU of soda • moke Is mixed with air. pected brilliancy. In order to find out the extent to which the intensity of the solar spectrum...that the dark lines D appeared with an extraordinary dsgree of clearness. I then exchanged the sunlight for the Drummond s or oxy-hydrogen lime light, which,... | |
 | Henry Watts - 1868 - 1170 pages
...threw the bright sodium-lines upon the solar spectrum with unexpected brilliancy. In order to find out the extent to which the intensity of the solar spectrum...increased, without impairing the distinctness of the sodium-lines, I allowed the full sunlight to shine through the sodium-flame upon the slit, and, to... | |
 | sir Henry Enfield Roscoe - 1869 - 396 pages
...threw the bright sodium lines upon the solar spectrum with unexpected brilliancy. In order to find out the extent to which the intensity of the solar spectrum...appeared with an extraordinary degree of clearness. " I then exchanged the sunlight for .the Drummond's or oxyhydrogen lime-light, which, like that of... | |
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