File:Comparison of indirect and direct illumination (1912) (14760281986).jpg

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

Original file ‎(3,680 × 2,623 pixels, file size: 735 KB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents

Summary[edit]

Description
English:

Identifier: comparisonofindi00habr (find matches)
Title: Comparison of indirect and direct illumination
Year: 1912 (1910s)
Authors: Habrylwicz, Valentine Bernard Kailer, Frank Spencer
Subjects: Interior lighting Lighting School buildings Theses
Publisher:
Contributing Library: University of Illinois Urbana-Champaign
Digitizing Sponsor: University of Illinois Urbana-Champaign

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:
'
 Text Appearing After Image:
9 ILLUMINOMETER. The instrument used in these tests was a portable photometer capableof measuring the illumination in foot-candles directly. It was made by theSharp Millar Company, of Philadelphia. It is an ideal instrument having all the essential features formaking it suitable for all kinds of photometric work with a great degree ofaccuracy and precision. The following characteristics which are desirable inthese tests are noticeable; A sensitive photometric device, a reliable comparison of light source,a good means for varying intensity, portability, simplicity of operation, andreasonable cost. The sensitive photometric device i3 a modified form of the Lumner-Brodhun arrangement. A calibrated Incandescent lamp is the light source,and its intensity upon the screen is varied by moving the lamp. The lampis mounted within a circular metal housing, and is carried on a platformarranged to 3lide in a track lengthwise in the box. The movement is effectedby means of an elastic cord which pas

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/14760281986/

Author

Habrylwicz, Valentine Bernard;

Kailer, Frank Spencer
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:comparisonofindi00habr
  • bookyear:1912
  • bookdecade:1910
  • bookcentury:1900
  • bookauthor:Habrylwicz__Valentine_Bernard
  • bookauthor:Kailer__Frank_Spencer
  • booksubject:Interior_lighting
  • booksubject:Lighting
  • booksubject:School_buildings
  • booksubject:Theses
  • bookcontributor:University_of_Illinois_Urbana_Champaign
  • booksponsor:University_of_Illinois_Urbana_Champaign
  • bookleafnumber:24
  • bookcollection:university_of_illinois_urbana-champaign
  • bookcollection:americana
Flickr posted date
InfoField
30 July 2014
The categories of this image need checking. You can do so here.
  • Please remove redundant categories and try to put this image in the most specific category/categories.
  • You can remove this template by clicking here (or on the first line).



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@N07/14760281986. It was reviewed on 26 August 2015 by FlickreviewR and was confirmed to be licensed under the terms of the No known copyright restrictions.

26 August 2015

File history

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

Date/TimeThumbnailDimensionsUserComment
current00:03, 9 December 2016Thumbnail for version as of 00:03, 9 December 20163,680 × 2,623 (735 KB)SteinsplitterBot (talk | contribs)Bot: Image rotated by 90°
03:33, 26 August 2015Thumbnail for version as of 03:33, 26 August 20152,623 × 3,694 (707 KB)Fæ (talk | contribs)== {{int:filedesc}} == {{information |description={{en|1=<br> '''Identifier''': comparisonofindi00habr ([https://commons.wikimedia.org/w/index.php?title=Special%3ASearch&profile=default&fulltext=Search&search=insource%3A%2Fcomparisonofindi00habr%2F fin...

You cannot overwrite this file.

There are no pages that use this file.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Comparison_of_indirect_and_direct_illumination_(1912)_(14760281986).jpg&oldid=866706115"