File:Weather balloon radiosonde 1944.jpg
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English: Photo of a US Weather Bureau weather balloon being launched, 1944. It consists of a latex balloon filled with helium, with a 2 lb. instrument package called a "radiosonde" suspended below it that transmits temperature, air pressure, and humidity data by radio telemetry to a ground station. By tracking the balloon by radar as it is blown sideways by winds as it ascends the station can get a vertical profile of high altitude wind. The balloon rises to a high altitude, over 15 miles (72,000 feed) before it pops. Then the radiosonde package floats to Earth on the miniature parachute seen at center. The wire hanging below the radiosonde package at bottom is its antenna. By 1944 the Weather Bureau was launching weather balloons twice daily from 40 locations in the US. Alterations to image: cropped out intruding text on page and cloned in a small amount of sky near balloon. |
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| Source | Retrieved June 11, 2014 from Francis Wilton Reichelderfer, "Weather Maps for Radio Broadcast" in Radio News magazine, Ziff-Davis Publishing Co., New York, Vol. 31, No. 4, April 1944, p. 21 |
| Author | Francis Wilton Reichelderfer, Chief from 1938 to 1963 of the US Weather Bureau |
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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. | ||
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 02:04, 12 June 2014 | | 478 × 1,663 (185 KB) | Chetvorno (talk | contribs) | User created page with UploadWizard |
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