File:Vortex Ring Gun Chalk Test.jpg

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Vortex_Ring_Gun_Chalk_Test.jpg ‎(466 × 323 pixels, file size: 98 KB, MIME type: image/jpeg)

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Description
English: The image shows the flight of a vortex ring laden with red chalk dust to enable visual inspection of the ability to transport and deposit a particulate chemical agent onto a target 70 ft down range.
Date
Source US Army Harry Diamond Laboratories
Author George Kenneth Lucey Jr.

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Public domain
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
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/TimeThumbnailDimensionsUserComment
current01:02, 14 August 2013Thumbnail for version as of 01:02, 14 August 2013466 × 323 (98 KB)Luceyg (talk | contribs){{Information |Description ={{en|1=The image shows the flight of a vortex ring laden with red chalk dust to enable visual inspection of the ability to transport and deposit a particulate chemical agent onto a target 70 ft down range.}} |Source ...

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