Word: methods
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Dates: during 1900-1909
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...system of advisors has been adopted by the University of Pennsylvania, with the modification from the Harvard method, that it is applied to all classes...
...system of observation employed, known as Argelander's method, is essentially as follows. A series of stars of constant brightness is selected, as near as possible to the variable to be observed, in such a way that the brightest is somewhat brighter than the variable at its maximum intensity, and the faintest somewhat fainter than the variable at minimum. Between these extremes the stars differ one from another in brilliance by about half a magnitude, and they are designated by letters in the order of brilliance. This sequence of stars of known magnitude enables the brightness of the variable star...
...political contributions are two:--"Translations from Michael Angelo" by Professor Santayana, reveal in a few lines a depth of poetic feeling combined with a thorough appreciation of the old Italian method of thought and expression. "Roger Wolcott by R. M. Green '02, is a very fine tribute to the late ex-governor--a poem that shows great powers of conception and that has caught well the spirit of public sentiment at the time of his death...
Since the attention of physicians is now directed to the curative effect of the ultra violet rays in certain forms of skin diseases, investigation was started by Professor Trowbridge upon the relative activity of these rays in the vapors of different metals. The method of study is an entirely new one and is only made possible by the aid of the large battery in the laboratory. An investigation was also taken up at the same time, on the subject of magnetism--to decide what degree of alternating current will reduce iron to a state of copper as far as magnetism...
Five instruments are now being used every night from sunset to sunrise to take photographs of different parts of the sky. During the day these plates are developed in the observatory dark room, by a mechanical method, recently devised by a member of the department. Twelve plates are placed at one time in a brass frame, which is kept in vertical motion by the action of a large pendulum. As the object is to get the faintest details, rather than the artistic effect of lights and shadows all plates are treated as if under exposed. In this way twenty-four...