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Image from page 209 of “The street railway review” (1891)
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Identifier: streetrailwayrev14amer
Title: The street railway review
Year: 1891 (1890s)
Authors: American Street Railway Association Street Railway Accountants’ Association of America American Railway, Mechanical, and Electrical Association
Subjects: Street-railroads
Publisher: Chicago : Street Railway Review Pub. Co
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation
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ARNOI>D SYSTEM. a step-down transformer in connection with a high tension trolleycircuit, thus increasing the weight of the car equipment. Repulsion Induction Motor. The repulsion induction motor developed by Steinmetz andSchuler, made by the General Electric Co., shows about the sameperformance as the series motor and can be fed directly from thehigh tension trolley since, as indicated in the illustration, the arma-ture is independent of the field. The current is induced in the arma-ture by transformer action and can be of any desired voltage. Thebrushes are short circuilod and are placed at an angle that will givebest running conditions. Repulsion Series Motor. Hic repulsion series motor developed by Winter and Eichbcrg,and built by the Union Electric Co., of Berlin, Germany, is similarto the repulsion induction motor with the addition of a second set
Text Appearing After Image:
I-AMME-FINZr SYSTEM. STEINMETZ-SCIIUI.ER SY.STEM. •Atjstract of a Paper Read Before the Cincinnati Branch of theAmerican Institute of Electrical IInglneers. of brushes displaced 90° from the short circuited brushes, as shownherewith. Through these brushes current is supplied by a seriestransformer for the purpose of decreasing the sparking at less thansynchronous speed and at the same time of raising the power factornearly to unity. Controllers, Car Wiring, etc. In general, the operation of the last three motors is effected bymaster controllers operating suitable contactors. Induction regula- Mak. -O. 1904.1 STREET RAILWAY REVIF.W. 193 lors are used in all three cases to secure tlie voltage variation neces-sary for speed control, thus avoiding the losses consequent to therheostatic control of the direct current system. To avoid dangerfrom the high potential used it is necessary that the car wiringshould be in metallic conduit. This should be connected to the trucksso that any defec
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Success: After Weight Loss Surgery 2008 – Charlotte, NC
Image by kevin_d_old
Taken at the 2008 "Success: After Weight Loss Surgery" conference in Charlotte, NC hosted by Southeast Bariatrics in association with www.band2gether.net.
Image from page 34 of “The diffusion of gases through liquids and allied experiments” (1913)
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Identifier: diffusionofgase00baru
Title: The diffusion of gases through liquids and allied experiments
Year: 1913 (1910s)
Authors: Barus, Carl, 1856-1935
Subjects: Diffusion
Publisher: Washington, D.C., Carnegie institution of Washington
Contributing Library: University of British Columbia Library
Digitizing Sponsor: University of British Columbia Library
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THE DIFFUSION OF GASES THROUGH Table 3-< Continued. Date. Hour. Barometer. H. /. ObservedwXio*. ComputedotXio*. A wXlo*. A. w. Apr. I ■ 3 30 75-37 51.40 17.6 6455 6402 + 53 2 5 00 75 97 49 92 •5-9 6304 6367 – 63 3 ■ 3 30 76 7 49 18 16.3 6202 6332 -130 4 4 00 77 07 48 68 16.3 6139 6297 -158 5 4 00 75 27 48 80 17.2 6137 6262 -125 6 • 3 45 75 3« 49 64 19.5 6197 6227 – 30 7 3 00 75 47 50 08 20.2 6238 6192 + 46 8 • 4 30 76 43 49 39 18.0 6195 6157 + 38 9 • 4 30 76 28 48 49 17.0 6101 6122 — 2J 10 4 00 76 86 48 34 19.0 6045 6087 – 42 II • 3 30 77 25 47 98 19.0 6000 6053 – 53 12 • 3 30 77 52 47 5« 18.2 5964 6018 – 54 13 4 00 77 36 47 27 18.8 5914 5983 – 69 4 • 3 45 76.26 47.07 7-5 593 5948 – 35 least squares. The run of the thermometer on the same sheet, fig. 6, bearsout this surmise. The barometer, like the vapor pressures, shows no easilydiscernible relation to the weight curve; but the run of temperature fore-shadows the kinks in the ni curve throughout its extent.
Text Appearing After Image:
^ek 5 10 15 ZO 25c/l(ar2 7 1Z m 22 Z7 cApri 6 Fig. 6.—Loss of mass of gas in diver in lapse of days. Diffusion of air into air. If we write for the air-water system (time t in days, mass m in grams) and compute the constants Wq and m by the method of least squares fromthe 68 observations made between January 31 and April 11, the valuesobtained are Wo = 0.0085327 gram w = 0.00003493 gram/day UQUroS AND ALLIED EXPERIMENTS. 21 The data for m calculated with these constants are also inscribed in table 3.The errors show the fluctuation of the temperature cycles. They may beregarded as eliminated from the curve as a whole. The rate m per dayreduced to seconds gives w = 4.o4X lo^ grams/sec, at about 20°Hence 4.04X10^° _13 k= ,, =1.09X10 7.05X524 The new value is thus much smaller than the tentative value, ^ = 2.9X io~found from the balloon-shaped Cartesian diver, with small mouth (2^ = 0.2cm.) after a period of eleven years. The uncertainty surrounding the latterdatum, in view of the lon
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