File:330-PS-1897 (USN 708246) (18889817025).jpg
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| Description | 330-PS-1897 (USN 708246): Navy Develops “Sound Proofest” Rooms. This old looking structure at Annapolis, Maryland, will house the Naval Acoustic Laboratory in which near perfect sound-proofing has been achieved in three testing rooms. The achievement in sound detection was made possible by the combination of this entirely new idea in sound-proofing and a unique building design. The building is constructed “inside out,” with the interior suspended from outside structural supports. The principal achievement was the creation of an “accordion” form for absorbing sounds. One of the chief elements of the form is fiber glass in sheets eight feet wide and of various lengths. This glass “pillow” was wrapped around a collapsible steel framework which when opened, resembles a spring of v-shaped decorations. The interior of the rooms presents a quilt-line appearance. This decoration has given the Navy what is perhaps the most sensitive sound-free room ever built. The new laboratory has three testing rooms, in any one of which it is possible to record virtually the lowest and highest sound frequencies without interference. The Navy’s civilian engineers worked out the plans for the new testing facility and supervised the construction. It is the property of the Navy’s Bureau of Ships. Photograph released May 25, 1951. (6/16/2015). |
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| Source | 330-PS-1897 (USN 708246) |
| Author | National Museum of the U.S. Navy |
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This image was originally posted to Flickr by Photograph Curator at https://flickr.com/photos/127906254@N06/18889817025 (archive). It was reviewed on 10 July 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the Public Domain Mark. |
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This file is a work of a sailor or employee of the U.S. Navy, taken or made as part of that person's official duties. As a work of the U.S. federal government, it is in the public domain in the United States.
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| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 05:10, 10 July 2018 | | 3,144 × 2,436 (1.58 MB) | Hiàn (alt) (talk | contribs) | Transferred from Flickr via #flickr2commons |
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