A Compilation of the Records of the Colorado Springs Lighting Controversy

A Compilation of the Records of the Colorado Springs Lighting Controversy

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1908 edition. Excerpt: ...shadows from the old arc are very dense? A. Why, at times they are; the globes arc liable to get dirty; that is one of the well known and generally admitted disadvantages of the old open arc. Q. Isn't the shadow due to the lower carbon and not to the globe, and therefore always present? A. There is a shadow due to the cutting off of the light by the lower carbon, but this exists also in any form of arc lamp to a certain extent. I think the main trouble from shadow's in the old open arc is an accumulation of dirt in the globes; they are very apt to gather up dirt and insects and what not, and the form of the old open arc lamp was not as skillfully designed as lamps which have been put out in recent years. There is no question whatever, that on the average the old open arc gives denser shadows than the moder n enclosed arc. Re-re-direct Examination by Mr. Robinson. Q. You haven't examined the present lamp globes on the street to see whether their outer globes fill up with insects, have you? A. Well, I have observed the dirt in the lower part of the globes, as I have been walking under them at night, but I can't say what their average condition is. Q. Isn't that accumulation of dirt in the outer globe very nearly as much in this kind of lamp as in the old kind? A. No, I don't think that the access to the enclosed lamp of modern design is as great as in the case of the average open arc; the dirt can't get in quite as readily as it used to in the earlier forms of open arc, but it does get in and docs produce shadows. Re-re-cross Examination by Mr. Schuyler. Q. Isn't it a fact, that one of the chief points of the enclosed arc is that it keeps out insects. A. The chief point is the great economy of operation on account of less trimming. Witness...show more

Product details

  • Paperback
  • 189 x 246 x 6mm | 227g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236866568
  • 9781236866561