File:Pacific Gas and Electric magazine (1912) (14597195990).jpg

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

Original file (1,734 × 1,398 pixels, file size: 341 KB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents

Summary

[edit]
Description
English:

Identifier: pacificgaselectr41913paci (find matches)
Title: Pacific Gas and Electric magazine
Year: 1909 (1900s)
Authors: Pacific Gas and Electric Company
Subjects: Pacific Gas and Electric Company Electric utilities Public utilities
Publisher: (San Francisco, Calif.) : Pacific Gas and Electric Co.
Contributing Library: San Francisco Public Library
Digitizing Sponsor: San Francisco Public Library

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:
ul-sen System of Wireless Telegraphy. This is a system invented by ValdemarPoulsen, a distinguished Danish scientist, andis a radical departure from all previous sys-tems in use. It is the result of many yearsof experiment and research on the part ofPoulsen, who, along with Marconi, Tesla,and other pioneers in this particular art, tookup the problem of improving and perfectingwireless communication, after Hertz, the great German scientist, first discovered thepossibility of generating electro-magnetic im-pulses which would travel great distancesthrough the ether, and which, in honor oftheir discoverer, are now known as Hertz-ian Waves. From the work of Marconiand others, all of the spark systems ofwireless telegraphy have been developed.They all, however, are fundamentally alike,although there are differences and refinementsin the sending or receiving apparatus used. Damped waves are those whose ampli-tude and, consequently, whose energy doesnot remain constant throughout the distance
Text Appearing After Image:
Interior of Federal Telcgraijh Companys station at Chicago, showing Poulsen generators 51

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/14597195990/

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.
Volume
InfoField
1912
Flickr tags
InfoField
  • bookid:pacificgaselectr41913paci
  • bookyear:1909
  • bookdecade:1900
  • bookcentury:1900
  • bookauthor:Pacific_Gas_and_Electric_Company
  • booksubject:Pacific_Gas_and_Electric_Company
  • booksubject:Electric_utilities
  • booksubject:Public_utilities
  • bookpublisher:_San_Francisco__Calif_____Pacific_Gas_and_Electric_Co_
  • bookcontributor:San_Francisco_Public_Library
  • booksponsor:San_Francisco_Public_Library
  • bookleafnumber:60
  • bookcollection:sanfranciscopubliclibrary
  • bookcollection:americana
Flickr posted date
InfoField
30 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@N07/14597195990. It was reviewed on 17 September 2015 by FlickreviewR and was confirmed to be licensed under the terms of the No known copyright restrictions.

17 September 2015

File history

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

Date/TimeThumbnailDimensionsUserComment
current03:50, 17 September 2015Thumbnail for version as of 03:50, 17 September 20151,734 × 1,398 (341 KB)Fæ (talk | contribs)== {{int:filedesc}} == {{subst:chc}} {{information |description={{en|1=<br> '''Identifier''': pacificgaselectr41913paci ([https://commons.wikimedia.org/w/index.php?title=Special%3ASearch&profile=default&fulltext=Search&search=insource%3A%2Fpacificgasel...

You cannot overwrite this file.

There are no pages that use this file.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Pacific_Gas_and_Electric_magazine_(1912)_(14597195990).jpg&oldid=944156284"