Image:Humboldt gasmask 1799.jpg
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| This is a file from the Wikimedia Commons. The description on its description page there is shown below. |
[edit] Yhteenveto
| Description |
Humboldt's first gasmask |
|---|---|
| Source |
English Wikipedia; scanned from: HUMBOLDT, Alexander von. Ueber die unterirdischen Gasarten und die Mittel ihren Nachtheil zu vermindern. Ein Beytrag zur Physik der praktische Bergbaukunde. Braunschweig, Friedrich Vieweg, 1799. 8vo. With 3 engraved folded plates. |
| Date |
1799 |
| Author |
Alexander von Humboldt |
| Permission |
public domain |
[edit] Licensing
 |
This image (or other media file) is in the public domain because its copyright has expired. This applies to the United States, Canada, the European Union and those countries with a copyright term of life of the author plus 70 years. العربية ǀ Български ǀ Català ǀ Česky ǀ Dansk ǀ Deutsch ǀ English ǀ Ελληνικά ǀ Esperanto ǀ Español ǀ Euskara ǀ فارسی ǀ Français ǀ Galego ǀ עברית ǀ हिन्दी ǀ Bahasa Indonesia ǀ Italiano ǀ 日本語 ǀ 한국어 ǀ Kurdî / كوردي ǀ Nederlands ǀ Norsk (nynorsk) ǀ Bahasa Melayu ǀ Polski ǀ Português ǀ Русский ǀ Slovenščina ǀ Shqip ǀ Suomi ǀ Svenska ǀ Türkçe ǀ 简体中文 ǀ 正體中文 ǀ +/- |
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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.
| Orientation | Normal |
|---|---|
| Horizontal resolution | 1 dpi |
| Vertical resolution | 1 dpi |
| Software used | Adobe Photoshop 7.0 |
| File change date and time | 23:26, 31 October 2005 |
| Color space | 65535 |
