File:Standard deposit gauge.jpg
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Summary
| Description |
English: A standard deposit gauge for collecting and measuring particulates such as soot in air pollution (see the Wikipedia article "Deposit gauge" for a technical and historic description). This photo comes from p.79 of the book "The smoke problem of great cities" by Napier Shaw and John Switzer Owens (London, Constable & Company, 1925) and (from the text) was probably used in the first scientific experiments featuring deposit gauges, published as "The Sootfall of London" in the Lancet, 1912. |
| Date | |
| Source | https://archive.org/details/smokeproblemofgr00shaw/page/79/mode/1up |
| Author | Unattributed, published in a book by Napier Shaw and John Switzer Owens |
Licensing
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This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer. This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929. |
| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 09:54, 25 February 2022 | | 417 × 557 (250 KB) | 45154james | Uploaded a work by Unattributed, published in a book by Napier Shaw and John Switzer Owens from https://archive.org/details/smokeproblemofgr00shaw/page/79/mode/1up with UploadWizard |
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