![Government discovers method to preserve movie film indefinitely. Washington, D.C., July 8. People living in the year 2000 will be able to see and hear today's history in the making through experiments on preserving movie film now being conducted by the National Bureau of Standards. The experts at the bureau recently completed "accelerated aging tests in which films in six months went through the effects of 50 years' storage in a cool dark room. These tests showed that cellulose, or explosive film, would last from 50 to 100 years. The new Safety or Acetate film "may be preserved for longer periods." Unofficially, the experts put the figure at several hundred years. The following set of pictures were made at the Bureau of Standards and the National Archives Building. (1) Accelerated aging, The stability of the films is tested similarly to paper. They are heated in this oven at 100 [degrees] C and tested for loss of flexibility and for evidences of chemical decomposition. Arnold Soorne, of the Bureau Staff, is picture making the test](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzE5MzgvMDEvMDEvZ292ZXJubWVudC1kaXNjb3ZlcnMtbWV0aG9kLXRvLXByZXNlcnZlLW1vdmllLWZpbG0taW5kZWZpbml0ZWx5LXdhc2hpbmd0b24tMTAyNC5qcGc%3D/320/255/jpg "Government discovers method to preserve movie film indefinitely. Washington, D.C., July 8. People living in the year 2000 will be able to see and hear today's history in the making through experiments on preserving movie film now being conducted by the National Bureau of Standards. The experts at the bureau recently completed \"accelerated aging tests in which films in six months went through the effects of 50 years' storage in a cool dark room. These tests showed that cellulose, or explosive film, would last from 50 to 100 years. The new Safety or Acetate film \"may be preserved for longer periods.\" Unofficially, the experts put the figure at several hundred years. The following set of pictures were made at the Bureau of Standards and the National Archives Building. (1) Accelerated aging, The stability of the films is tested similarly to paper. They are heated in this oven at 100 [degrees] C and tested for loss of flexibility and for evidences of chemical decomposition. Arnold Soorne, of the Bureau Staff, is picture making the test")
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![Government discovers method to preserve film. (2) Expansion and contraction, like paper and other sheet materials made from cellulose, films expand as they take up moisture and contract as they lose it, and the extent of the change is different in the two directions of them. This may cause some distortion of the image, and therefore is of particular importance where the image must be true to scale, such as in aerial photography. C.O. Pope is shown with a type of expansiveity tester used and which was designed by the Bureau of Standards. Long strips of film are suspended under constant tension in the [cabinet?] in which the humidity is varied by means of [...] solutions. The change in length is indicated [...continuously?] on a scale by means of an optical-level arrangement, 7/8/38](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzIwMTUvMTEvMjUvZ292ZXJubWVudC1kaXNjb3ZlcnMtbWV0aG9kLXRvLXByZXNlcnZlLWZpbG0tMi1leHBhbnNpb24tYW5kLWNvbnRyYWN0aW9uLWxpa2UtNjQwLmpwZw%3D%3D/40/32/webp "Government discovers method to preserve film. (2) Expansion and contraction, like paper and other sheet materials made from cellulose, films expand as they take up moisture and contract as they lose it, and the extent of the change is different in the two directions of them. This may cause some distortion of the image, and therefore is of particular importance where the image must be true to scale, such as in aerial photography. C.O. Pope is shown with a type of expansiveity tester used and which was designed by the Bureau of Standards. Long strips of film are suspended under constant tension in the [cabinet?] in which the humidity is varied by means of [...] solutions. The change in length is indicated [...continuously?] on a scale by means of an optical-level arrangement, 7/8/38")
Government discovers method to preserve movie film indefinitely. Washington, D.C., July 8. People living in the year 2000 will be able to see and hear today's history in the making through experiments on preserving movie film now being conducted by the National Bureau of Standards. The experts at the bureau recently completed "accelerated aging tests in which films in six months went through the effects of 50 years' storage in a cool dark room. These tests showed that cellulose, or explosive film, would last from 50 to 100 years. The new Safety or Acetate film "may be preserved for longer periods." Unofficially, the experts put the figure at several hundred years. The following set of pictures were made at the Bureau of Standards and the National Archives Building. (1) Accelerated aging, The stability of the films is tested similarly to paper. They are heated in this oven at 100 [degrees] C and tested for loss of flexibility and for evidences of chemical decomposition. Arnold Soorne, of the Bureau Staff, is picture making the test
Summary
Public domain historical photo, free to use, no copyright restrictions image - Picryl description
Tags
Date
01/01/1938
Contributors
Harris & Ewing, photographer
Location
Washington, District of Columbia, United States, 38.90719, -77.03687
Source
Library of Congress
Copyright info
No known restrictions on publication.
