Bulletin - Canadian Society of Civil Engineers Volume 1-11 by Canadian Society of Civil Engineers
---------------------------------------------------------------
Author: Canadian Society of Civil Engineers
Page Count: 130 pages
Published Date: 01 May 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
ISBN: 9781235911491
File Name: Bulletin.-.Canadian.Society.of.Civil.Engineers.Volume.1-11.pdf
Download Link: Bulletin - Canadian Society of Civil Engineers Volume 1-11
---------------------------------------------------------------
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 Excerpt: ...at this efficiency give as good life as the ordinary carbon lamp at 3.1 watts per candle. This metallizing of the carbon adds to the cost of the lamp, and the consumer is likely to prefer a little additional expenditure for his lamps and secure the much higher efficiency of 1.25 watts per candle which he gets in the tungsten lamp. For this same reason he is likely, in most cases, to pass by the tantalum metallic filament lamp with its efficiency of from 1.8 to 2.0 watts per candle, although with the ability of this tantalum lamp to stand rough handling, and its adaptability to quite low candle powers at 110 volts, there is quite a field still open to it where direct current is used. One factory in Europe is at present turning out about 20,000 tantalum lamps per day. Its life on alternating current is only about one-half as great as on direct current, but still, on alternating current a life of 600 hours or more is now claimed for it, while if left on the circuit undisturbed and free from jarring or vibration, a much longer life than this can be obtained from the tantalum lamp, even on alternating current circuits, particularly those of low frequency. The tungsten lamp, having the highest efficiency of any metallic filament incandescent lamp--has naturally attracted the most attention among the various new illuminants that have been placed upon the market within the last few years. In order to test the claims made for this tungsten lamp by various interested persons, the writer started a life test about the middle of last year for the purpose of ascertaining: 1st--The comparative behaviour of various different makes of tungsten lamps under the most favourable conditions as to voltage regulation. 2nd--The relative behaviour of the same make of tungsten, as we...
Read online Bulletin - Canadian Society of Civil Engineers Volume 1-11
Buy and read online Bulletin - Canadian Society of Civil Engineers Volume 1-11
Download Bulletin - Canadian Society of Civil Engineers Volume 1-11 for pc, mac, kindle, readers
Download to iPad/iPhone/iOS, B&N nook Bulletin - Canadian Society of Civil Engineers Volume 1-11 ebook, pdf, djvu, epub, mobi, fb2, zip, rar, torrent
More entries:
Famous Puzzles of Great Mathematicians pdf
Dominoes: Starter: Sinbad pdf
key bank home mortgagee clause
Advanced Instrumentation and I/O Design : A Model-Based Approach download torrent
Press Bias and Politics : How the Media Frame Controversial Issues download pdf
true crime hong kong keygen download filehippo
Download PDF, EPUB, Kindle Wings of Their Dreams : Purdue in Flight
That Eye, the Sky ebook
