Similar
![Government discovers method to preserve [...] (3) Test for fading. D. Levinsky of the Bureau of Standards is pictured exposing a developed film to light from a carbon arc to find whether the photographic image fades. The carbon-arc light simulates daylight closely and therefore is used for many materials as a standard source of illumination for this purpose, 7/8/38](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzIwMTUvMTEvMjUvZ292ZXJubWVudC1kaXNjb3ZlcnMtbWV0aG9kLXRvLXByZXNlcnZlLTMtdGVzdC1mb3ItZmFkaW5nLWQtbGV2aW5za3ktb2YtdGhlLTY0MC5qcGc%3D/40/32/webp "Government discovers method to preserve [...] (3) Test for fading. D. Levinsky of the Bureau of Standards is pictured exposing a developed film to light from a carbon arc to find whether the photographic image fades. The carbon-arc light simulates daylight closely and therefore is used for many materials as a standard source of illumination for this purpose, 7/8/38")
Related
Für diese Struktur existiert unbearbeitetes Feldnotenmaterial: FN-4 Vermessungsnummer: HAER WA-24-B Baujahr / Bausubstanz: 1925 Baubeginn Bau- / Konstruktionsdaten: 1951 Nacharbeiten Bau- / Konstruktionsdaten: 1951 Nacharbeiten Bau- / Konstruktionsdaten: 1980 Nachfolgearbeiten Bau- / Statikdaten: 1949 Nacharbeiten
Zusammenfassung
Skagit Power Development, Gorge Powerhouse, Am Skagit River, 0,4 Meilen flussaufwärts von Newhalem, Newhalem, Whatcom County, WA
Tags
Datum
1969 - 1980
Mitwirkende
Historic American Engineering Record, creator
Ross, J D
Jorgenson, Lars
Westinghouse Electric & Manufacturing Company
Seattle City Light
S. Morgan Smith Company
Lage
Newhalem, 48.67389, -121.24611
Quelle
Library of Congress
Copyright-info
No known restrictions on images made by the U.S. Government; images copied from other sources may be restricted. http://www.loc.gov/rr/print/res/114_habs.html
