Word: photographers
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Dates: during 1890-1899
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CRIMSON.- The annual photograph of the present board and the ninety-six editors will be taken at Pach's at 1.30 this afternoon...
Professor Trowbridge confined his lecture to the practical application of Roentgen's discovery to the arts and especially to surgery. He called attention to the methods by which use was made of the rays and the apparatus, and dwelt especially upon the fact that a photograph can be taken with simple means in reach...
Coming now to the method of taking photographs, the lecturer showed the difference in the process. In taking a photograph with cathode rays a plain dry plate is used. There are the customary slides in the holder but there is no central opaque partition. The hand or object to be photographed is put on the slide and you get a photograph of the shade. As glass absorbs the rays a lens would be of no use and would prevent the taking of a photograph. Thus the common process of photographing is exactly reversed with the cathode rays. This was illustrated...
...Cathode photographs have been called shadow pictures, but this is not an exactly correct name for them. This is because a piece of glass as thick as a piece of paper absorbs a large number of rays and throws a very thick shadow on the plate while even a thick piece of wood throws hardly any shadow. The shadow photograph, however, is very exact in other respects. In the photograph of the human hand it shows the gradations of the absorption of the rays with the thickness of the bones...
...latest acquistion to the Fogg Museum is a fine cast of the Pieta of St. Peters in Rome by Michael Angelo. This cast is now on view in the Michael Angelo room, and near it is hung a large carbon photograph taken from the marble. From the two a very just idea of this important early work by the great master may be obtained...