 | Albany Institute - 1864 - 348 pages
...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....increased without impairing the distinctness of the sodium lines I allowed the full sunlight to shine through the sodium flame and to my astonishment,... | |
 | National Sunday school union - 1871 - 598 pages
...metallic base of 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...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
...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....increased without impairing the distinctness of the sodium lines, I allowed the full sunlight to shine through the sodium flame, and to my astonishment... | |
 | Gustav Robert Kirchhoff - 1862 - 62 pages
...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....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... | |
 | 1863 - 376 pages
...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....increased without impairing the distinctness of the sodium lines, I allowed the full sunlight to shine through the sodium flame, and to my astonishment... | |
 | Howard Townsend - 1864 - 254 pages
...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....increased without impairing the distinctness of the sodium lines I allow the full sunlight to shine through the sodium flame and to my astonishment, I... | |
 | 1865 - 778 pages
...the dark lines D change into bright ones. The flame of Bunson's lamp threw the bright sodium lines upon the solar spectrum, with unexpected brilliancy. In order to find out 1865.] JEWELL — On Science of Light. 33 the extent to which the intensity of the aolar spectrum could... | |
 | 1866 - 646 pages
...lino ii obsorrnble whnn lets thin ouo twonty-niI!llo»tU of soda • moke Is mixed with air. pected brilliancy. In order to find out the extent to which...increased, without impairing the distinctness of the sodium lines, I allowed the full sunlight to shine through the sodium flame and to my astonishment,... | |
 | sir Henry Enfield Roscoe - 1869 - 396 pages
...the dark linos D change into bright ones. The flame of a Bunsen's lamp threw the bright sodium lines upon the solar spectrum with unexpected brilliancy....increased without impairing the distinctness of the sodium lines, I allowed the full sunlight to shine through the sodium flame, and to my astonishment... | |
 | Henry E. Roscoe - 1869 - 372 pages
...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....increased without impairing the distinctness of the sodium lines, I allowed the full sunlight to shine through the sodium flame, and to my astonishment... | |
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In order to find out the extent to which the intensity of the solar spectrum could be 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 my astonishment,... 
