File:A model of a 7-inch falling sphere NASA sond.png
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[edit]DescriptionA model of a 7-inch falling sphere NASA sond.png |
English: These spheres, originally developed by the University of Michigan, were used to determine upper atmospheric density by measuring the drag on them as they fell after being released from a rocket at high altitude. They contained an accelerometer in which the time-of-fall of a spherical bobbin was measured, a telemetry system, electronic control circuits and a battery power supply. The flight sphere had the top and
bottom enclosed by aluminum hemispheres. |
Source | EARLY YEARS OF AIR FORCE GEOPHYSICS RESEARCH CONTRIBUTING TO INTERNATIONALLY RECOGNIZED STANDARD AND REFERENCE ATMOSPHERES (24. Nov. 1995) |
Author | Kenneth S. W. Champion |
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[edit]Public domainPublic domainfalsefalse |
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.
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This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. |
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
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current | 21:41, 28 May 2012 | 684 × 880 (634 KB) | Cs wikipedro (talk | contribs) |
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