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Cedar Rapids Cosmos Newspaper Archive: October 22, 1909 - Page 1

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Publication: Cedar Rapids Cosmos

Location: Cedar Rapids, Iowa

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   Cosmos, The (Newspaper) - October 22, 1909, Cedar Rapids, Iowa                                THE COSMOS COE COLLEGE VOL. XXI OCTOBER 22, t909 NO. 3 NEW COLLEGE EQUIPMENT New Apparatus for Physics Laboratory Professor Weld has recently receiv- ed some consignments of very fine new instruments for use in the De- partment of Physics. The larger part of these are optical instruments for the course of theory of light. The most important is an optical bench by W. L. E. Gurley of Troy, with a large number of attachments for ex- periments and measurements in inter- ference and diffraction, those phe- nomena which go far toward making the study of light the most beautiful and attractive field in the whole do- main of physics. Another splendid piece is a spectrometer by the same makers with finely graduated silver circles, for the measurement of in- dices of refraction, wave lengths of spectrum lines, and general spectro- metric purposes. One of the most interesting pieces is a heliostat by Wm. Gaertnea of Chicago, consisting of an arrangement of mirrors moved by clockwork in such a way that a beam of light, reflected from the sun, will be maintained steadily in the same direction all day, from sunrise to sun- set, and can thus be made arailable for optical purposes without the movement and interruption which are inevitable with stationary mirrors. The broad stone ledges outside cer- tain windows of the new physics lab- oratory are for the purpose of giving solid support to this instrument in the open sunlight. Other apparatus, not optical, in- cludes a set of precision weights, platinum plated, imported from Sar- tor i us of Germany, makers of the ex- quisite equal arm balance which Pro- fessor Weld has for a year been sub- jecting to most exacting special tests. These new weights are similar in all respects to the sets of gold weights already used in the laboratory, and are to be officially standardized at Washington and used as laboratory standards only. There is also a sec- ond set of precision thermometers by Siebert and Kuhn of Germany, grad- uated over their entire range to tenths of a degree, and like the weights, to be standardized, and reserved entirely for testing other less expensive ther- mometers. It is gratifying to know that our physics laboratory is gradually being equipped with the best apparatus ob- tainable, and will before long be ready to meet the full requirement of every course in physics offered. Professor Weld is perfecting a system of ac- counting which will keep close track of every piece in the laboratory and vastly reduce that wholesale break- age, loss and deterioration which delicate and expensive equipment of this kind suffers in so many institu- tions through carelessness and irre- sponsible handling. 55   

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