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File:Coating CRTs at Research Enterprises.jpg

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Summary

Description
English: One of Research Enterprise's more popular products was a series of CRTs used for radar and radio navigation systems. Here the insides of the tubes are being coated with phosphorus paint to produce the display surface.
Date
Source http://data2.archives.ca/e/e443/e011074247-v8.jpg
Author Nicholas Morant, National Film Board of Canada, Collections Canada MIKAN no. 3597875

Licensing

Public domain
This Canadian work is in the public domain in Canada because its copyright has expired due to one of the following:
1. it was subject to Crown copyright and was first published more than 50 years ago, or

it was not subject to Crown copyright, and

2. it is a photograph that was created prior to January 1, 1949, or
3. the creator died prior to January 1, 1972.
You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
 Note that this work might not be in the public domain in countries that do not apply the rule of the shorter term and have copyright terms longer than life of the author plus 50 years. In particular, Mexico is 100 years, Jamaica is 95 years, Colombia is 80 years, Guatemala and Samoa are 75 years, Switzerland and the United States are 70 years, and Venezuela is 60 years.

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inception

9 June 1942

media type

image/jpeg

checksum

9c194fc44541c2977caeaa1aba18a3961c6a2baf

determination method or standard: SHA-1

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126,526 byte

height

755 pixel

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Date/TimeThumbnailDimensionsUserComment
current19:49, 2 December 2014Thumbnail for version as of 19:49, 2 December 20141,000 × 755 (124 KB)Maury MarkowitzUser created page with UploadWizard

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