File:Electrical instruments and telephones of the U.S. Signal corps (1911) (14753429551).jpg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Original file ‎(1,738 × 582 pixels, file size: 65 KB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents

Summary

[edit]



Description
English:

Identifier: electricalinstru00unitrich (find matches)
Title: Electrical instruments and telephones of the U.S. Signal corps
Year: 1911 (1910s)
Authors: United States. Army. Signal Corps
Subjects: Military telegraph -- United States Military telephone -- United States
Publisher: Washington, Govt. print. off.
Contributing Library: University of California Libraries
Digitizing Sponsor: MSN

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
Key Gal van om&ter Siidnp J^s Sconce umuummmv
Text Appearing After Image:
Distant Cnd of Cable Fig. 100. VOLTAM.AIETER FOR INSPECTION AND TESTINli OF UATTERIES.KESISTANCE OF V0LTMETP:R COIL, TOO OHMS: OF AMMETER COIL. 0..~» OHM. This is a low-range instrument, designed especially for inspectingtelephone and telegra))h batteries and storage cells. (See fig. 101.) Caution.—Never connect with more than one storage cell or morethan three of other kinds. Too large a current or high voltage willbend the indicator or burn out the coils. Dry batteries and sal ammoniac batteries (such as Leclanche.Gonda, etc.) should have voltages between 1.4 and 1.5. This isobtained by connecting with binding posts V P—P being positive. ELECTRICAL INSTRUMENTS U. S. SIGNAL CORPS. 273 Then, by conneetino- with ^1 instead of T, the current is indicated onthe ampere scale. Since the resistance of the ampere coils is 0.5 ohm, the internal resistance of the cell is given by the formula -^ where A=voltage of the cell and 6=current in amperes. The de-terioration of a dry or sal ammoni

Note About Images

Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.
Date
Source

https://www.flickr.com/photos/internetarchivebookimages/14753429551/

Author Internet Archive Book Images
Permission
(Reusing this file)		 At the time of upload, the image license was automatically confirmed using the Flickr API. For more information see Flickr API detail.
Flickr tags
InfoField
  • bookid:electricalinstru00unitrich
  • bookyear:1911
  • bookdecade:1910
  • bookcentury:1900
  • bookauthor:United_States__Army__Signal_Corps
  • booksubject:Military_telegraph____United_States
  • booksubject:Military_telephone____United_States
  • bookpublisher:Washington__Govt__print__off_
  • bookcontributor:University_of_California_Libraries
  • booksponsor:MSN
  • bookleafnumber:275
  • bookcollection:cdl
  • bookcollection:americana
Flickr posted date
InfoField
27 July 2014

Licensing

[edit]
This image was taken from Flickr's The Commons. The uploading organization may have various reasons for determining that no known copyright restrictions exist, such as:
  1. The copyright is in the public domain because it has expired;
  2. The copyright was injected into the public domain for other reasons, such as failure to adhere to required formalities or conditions;
  3. The institution owns the copyright but is not interested in exercising control; or
  4. The institution has legal rights sufficient to authorize others to use the work without restrictions.

More information can be found at https://flickr.com/commons/usage/.

Please add additional copyright tags to this image if more specific information about copyright status can be determined. See Commons:Licensing for more information.
This image was originally posted to Flickr by Internet Archive Book Images at https://flickr.com/photos/126377022@N07/14753429551. It was reviewed on 18 September 2015 by FlickreviewR and was confirmed to be licensed under the terms of the No known copyright restrictions.

18 September 2015

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current06:26, 18 September 2015Thumbnail for version as of 06:26, 18 September 20151,738 × 582 (65 KB)Fæ (talk | contribs)== {{int:filedesc}} == {{subst:chc}} {{information |description={{en|1=<br> '''Identifier''': electricalinstru00unitrich ([https://commons.wikimedia.org/w/index.php?title=Special%3ASearch&profile=default&fulltext=Search&search=insource%3A%2Felectricali...

You cannot overwrite this file.

There are no pages that use this file.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Electrical_instruments_and_telephones_of_the_U.S._Signal_corps_(1911)_(14753429551).jpg&oldid=915071227"