File:Buttonhook Trachoma.jpg
Original file (2,336 × 3,504 pixels, file size: 3.58 MB, MIME type: image/jpeg)
Captions
DescriptionButtonhook Trachoma.jpg |
Text written: "Trachoma, a highly contagious eye infection that could cause blindness, was common in south-eastern Europe but relatively unknown in the United States. It appeared as infalmmations on the inner eyelid. Doctors checked for the disease by raising the eyelid with their fingers, a hairpin, or a buttonhook. Since trachoma was difficult to cure, sufferers were generally isoloated and sent back to their ports of embarkation. Buttonhook of the type used by Ellis island physicians for trachoma examination." |
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Date | |||
Source | Flickr: Buttonhook | ||
Author | Shelley Panzarella | ||
Permission (Reusing this file) |
This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 01:20, 2 May 2014 | 2,336 × 3,504 (3.58 MB) | Flickr upload bot (talk | contribs) | Uploaded from http://flickr.com/photo/68586899@N00/2328408840 using Flickr upload bot |
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Metadata
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Camera manufacturer | Canon |
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Camera model | Canon EOS 30D |
Exposure time | 1/50 sec (0.02) |
F-number | f/3.2 |
ISO speed rating | 1,600 |
Date and time of data generation | 13:30, 3 March 2008 |
Lens focal length | 44 mm |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
File change date and time | 13:30, 3 March 2008 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.21 |
Date and time of digitizing | 13:30, 3 March 2008 |
Meaning of each component |
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APEX shutter speed | 5.6438598632812 |
APEX aperture | 3.3561401367188 |
APEX exposure bias | 0 |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 3,959.3220338983 |
Focal plane Y resolution | 3,959.3220338983 |
Focal plane resolution unit | inches |