"Periodic" Quotes from Famous Books
 ... head appeared again, but without any unusual turbidity in the applied water. Investigation, however, showed the presence of large quantities of organisms, particularly melosira and synedra, in the applied water, and examinations in subsequent years have shown a periodic recurrence of these forms in quantities sufficient to cause the trouble mentioned. In June, 1907, examination showed repeatedly more than 1,000 and 1,500 standard units of melosira per cu. cm., and one count showed nearly 3,000 ...
— Transactions of the American Society of Civil Engineers, vol. LXXII, June, 1911 • E. D. Hardy
... altogether, one may therefore assume that the so-called captured comets are disintegrating at a comparatively rapid rate. Kepler long ago maintained that "comets die," and this actually appears to be the case. The ordinary periodic ones, such, for instance, as Encke's Comet, are very faint, and becoming fainter at each return. Certain of these comets have, indeed, failed altogether to reappear. It is notable that the members of Jupiter's comet ...
— Astronomy of To-day - A Popular Introduction in Non-Technical Language • Cecil G. Dolmage
... numerous eating-houses meals are provided at very moderate charges, and at Panama and Colon large, up-to-date hotels are maintained by the American Government. These are used very extensively by the Canal staff, and give periodic dances, which are crowded with young people. The vagaries of the one-step are sternly barred by a puritan committee, and, to one who expects surprises, the style of dancing is disappointingly monotonous. But these hotels ...
— The Great Events by Famous Historians, Vol. 21 - The Recent Days (1910-1914) • Charles F. Horne, Editor
... simple rules, of which these are the chief:—(1) Never discharge below a potential difference of 1.85 (or in rapid discharge, 1.8) volt. (2) Never leave the cells discharged, if it be avoidable. (3) Give the cells a special full charging once a month. (4) Make a periodic examination of each cell, determining its E.M.F., density of acid, the condition of its plates and freedom from growth. Any incipient growth, however small, must be carefully watched. (5) If any cell shows signs of weakness, keep it off discharge till it has been brought back to full condition. ...
— Project Gutenberg Encyclopedia
... servants at Las Palmas were, on the whole, well trained, and Mrs. Austin's periodic absences excited no comment; in the present instance, Dolores fixed a bath and laid out clean clothes with no more than a running accompaniment of chatter concerned with household affairs. Dolores, indeed, was superior to the ordinary servant; she was a woman of some managerial ability, ...
— Heart of the Sunset • Rex Beach
|
