Image:McKayandBlackCDC01.jpg
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[edit] Summary
File from the Center for Disease Control and Prevention's Public Health Image Library (PHIL).
Picture labelled as: "In 1909, Dr. G.V. Black (Lt) visited Dr. F. McKay (Rt) in Colorado Springs to investigate the Colorado brown stain phenomenon.
Dr. McKay’s 1931 discovery that a high level of fluoride in the drinking water of the Colorado Springs area was causing brown stains, and resistance to tooth decay of tooth enamel among the native inhabitants, led to the modern fluoridation process."
Photo uploaded by Dozenist.
[edit] Licensing
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This work is in the public domain in the United States because it is a work of the United States Federal Government under the terms of Title 17, Chapter 1, Section 105 of the US Code. See Copyright.
Note: This only applies to works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. العربية | Česky | Deutsch | Español | 한국어 | Italiano | 日本語 | Magyar | Français | Português | 简体中文 | 正體中文 | +/- < |
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Metadata
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified image.
| Width | 1806 |
|---|---|
| Height | 2526 |
| Bits per component | 8 |
| Compression scheme | 5 |
| Pixel composition | 3 |
| Image title | G.V. Black visited Frederick McKay in Colorado Spring, Colorado, in July 1909 to investigage the condition then called Colorado brown stain. |
| Orientation | Normal |
| Number of components | 1 |
| Number of rows per strip | 6 |
| Horizontal resolution | 300 dpi |
| Vertical resolution | 300 dpi |
| Software used | Adobe Photoshop 7.0 |
| File change date and time | 18:52, 5 March 2006 |
| Color space | 65535 |
