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Summary
DescriptionSmyths revised ozonometer, 1865. (9660571191).jpg | To test ozone levels in the atmosphere, a test paper is held across an air stream drawn into the ozonometer for a fixed length of time or for a fixed volume of air. The test paper, having been treated with chemicals (such as iodide of starch) before exposure, changes colour according to the amount of ozone in the air and can be compared with a prepared scale. Smyth's revisions to his original instrument incorporated a boxwood canister to support the test paper and the design apparently made the measurements both faster and more accurate. |
Date | |
Source |
Smyth's revised ozonometer, 1865.
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Author | Science Museum London / Science and Society Picture Library |
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This image, originally posted to Flickr, was reviewed on 3 September 2013 by the administrator or reviewer File Upload Bot (Magnus Manske), who confirmed that it was available on Flickr under the stated license on that date. |
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copyrighted
copyright license
Creative Commons Attribution-ShareAlike 2.0 Generic
inception
28 August 2013
source of file
file available on the internet
operator: Flickr
described at URL: https://www.flickr.com/photos/sciencemuseum/9660571191
media type
image/jpeg
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 10:25, 3 September 2013 | 1,250 × 1,015 (162 KB) | File Upload Bot (Magnus Manske) | Transferred from Flickr by User:Mrjohncummings |
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Metadata
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Image title |
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Author | Science Museum |
Copyright holder |
|
Source | METC100066 |
Online copyright statement | www.nmsi.ac.uk/piclib/ |
Short title |
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Width | 3,504 px |
Height | 2,846 px |
Bits per component |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop CS6 (Macintosh) |
File change date and time | 15:11, 28 August 2013 |
Exif version | 2.21 |
Color space | Uncalibrated |
Special instructions | Science & Society Picture Library
020 7942 4400 piclib@nmsi.ac.uk |
Urgency | 5 |
Category | Meteorology |
Unique ID of original document | adobe:docid:photoshop:6a1e696c-6842-11d7-b81e-91d6862d7a44 |
Copyright status | Copyrighted |
Date and time of digitizing | 13:18, 28 August 2013 |
Date metadata was last modified | 16:11, 28 August 2013 |
Keywords | ozonometers; air testing; ozone; ozone measurement; Smyth, John; meteorological instruments |
Country shown | United Kingdom |
IIM version | 2 |
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