Word: photographs
(lookup in dictionary)
(lookup stats)
Dates: during 1880-1889
Sort By: most recent first
(reverse)
ADVOCATE.- Photograph to-day at Pach's at 1.30 sharp...
ADVOCATE.- Photograph to-day at Pach's at 1.30 sharp...
...various metals were obtained by burning the metal in the flame of a Bunser lamp placed before the slit of a spectroscope which had one prism. As a consequence the lines of the spectra were crowded together and confused. The modern method of observing spectra is by taking photographs in the spectroscope and composing the result with a photograph of the Sun's spectrum...
...extend the spectrum beyond the visible part. The great interest of to-day, however, centers in the invisible rays of heat. Until very recently, photographs could only be taken by violet rays of the spectrum. Now, however, the method has been extended so as to include the yellow and red rays, known as the all-day exposure method. Here the lecturer showed a photograph taken by Mr. Burbank, '89, of two sodium lines. It is the first one of the kind that has ever been produced. America has done more in the last fifty years to bring photography to perfection...
General Sherman has presented a large photograph of himself to the college library, with his own autograph...