Archiu:Coolidge xray tube.jpg
Tamany d'esta vista prèvia: 800 × 306 píxels. Atres/s resolucions: 320 × 123 píxels | 1076 × 412 píxels.
Resolució completa. ((1076 × 412 pixels, tamany de l'archiu: 116 kB, MIME tipo: image/jpeg))
Summary
| Description | Photo of a Coolidge x-ray tube, from the early 1900s. The cathode is on the left, heated by a separate current passing through a filament, which releases electrons into the tube. The anode target is on the right. A high voltage of several thousand volts applied between the cathode and anode accelerates the electrons into a beam which strikes the anode, generating x-rays. The surface of the anode is angled so the x-rays are emitted in a downward direction, through the side of the tube. Alterations: rotated image 90° clockwise, cropped out frame |
| Date | |
| Source | Downloaded from Daniel Frost Comstock & Leonard T. Troland (1917) The Nature of Matter and Electricity: An Outline of Modern Views, D. Van Nostrand Co., New York, p.190, Plate 5 on Google Books |
| Author | Daniel Frost Comstock |
| Permission (Reusing this file) |
Public domain - published in USA before 1923 |
Licensing
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This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1931, and if not then due to lack of notice or renewal. See this page for further explanation.
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| Data/Hora | Miniatura | Dimensions | Usuari | Descripció | |
|---|---|---|---|---|---|
| actual | 03:58 24 dec 2007 | | 1076 × 412 (116 kB) | wikimediacommons>Chetvorno | {{Information |Description=Photo of a Coolidge x-ray tube, from the early 1900s. Alterations: rotated image 90° clockwise, cropped out frame |Source=Downloaded from [http://books.google.com/books?id=jQA4AAAAMAAJ&pg=PA190 Daniel Frost Comstock & Leonard |
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