Word: effective
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Dates: during 1900-1909
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...most important of these is in regard to the question of the nature of the atmosphere of the sun. The experiment was performed by Professor Trowbridge and consisted in a careful study of the effect of powerful discharges of electricity on the spectra of various gases. Although great care was taken in drying and pur fying these gases, it was found that hydrogen, nitrogen and rarefied air gave substantially the same spectrum under the same conditions and as a result of the powerful electrical discharges the aqueous vapor was released from the walls of the spectrum tubes. From this investigation...
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...
...refreshing variety of humorous stories, somewhat marred in effect by a few carelessly drawn pictures, are to be found in the latest Lampoon. The drawings, with exception of the picture on the centre page, besides being carelessly executed, have a monotony of style which may be attributable to the fact that all the work in this department has been done by a small number of men. The literary department the paper, in contrast to most of its previous issues, is decidedly better than the pictorial. "The Woman Hater," told in natural slang, is a new and enjoyable illustration...
...statement printed in yesterday's CRIMSON to the effect that the Harvard Yacht Club had received a challenge from Yale was incorrect. The Harvard club has sent a preliminary note to the Yale club, suggesting that a race be arranged, if possible, between two fifteen-to-twenty-footers. No reply to this letter has been received...
...placed in different parts of the grounds, but each is controlled by a central electrical station. By the use of a switch board one man can operate from this station as many of the instruments as he may desire. In order that the motion of the earth may not effect the relative position of the photographic telescope and the object, the instrument is moved on an axis parallel to the earth and regulated by clock work in such a way that the distance the earth moves to the East is neutralized by the motion of the telescope in the opposite...