File:Clepsydra-Diagram-Fancy.jpeg
Clepsydra-Diagram-Fancy.jpeg (375 × 600 pixels, file size: 57 KB, MIME type: image/jpeg)
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Summary
DescriptionClepsydra-Diagram-Fancy.jpeg | Diagram of a fancy clepsydra, this type being an automaton or self-adjusting machine. Water enters and raises the figure, which points at the current hour for the day. Spillover water operates a series of gears that rotates a cylinder so that hour lengths are appropriate for today's date. The ancient Greeks and Romans had twelve hours from sunrise to sunset; since summer days are longer than winter days, summer hours were longer than winter hours. |
Date | |
Source | Abraham Rees (1819) "Clepsydra" in Cyclopædia: or, a New Universal Dictionary of Arts and Sciences The image is the JPEG reproduction published 2007-02-01 by the Horological Foundation. |
Author | The illustrator was probably w:John Farey, Jr. (1791–1851). The principal engraver for the encyclopedia was Wilson Lowry (1762–1824).[1] |
Other versions | Image:Clepsydra-Diagram-Fancy.png |
Licensing
Public domainPublic domainfalsefalse |
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. You must also include a United States public domain tag to indicate why this work is in the public domain in the United States. Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Jamaica has 95 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term. Honduras has a general copyright term of 75 years, but it does implement the rule of the shorter term. Copyright may extend on works created by French who died for France in World War II (more information), Russians who served in the Eastern Front of World War II (known as the Great Patriotic War in Russia) and posthumously rehabilitated victims of Soviet repressions (more information). | |
This file has been identified as being free of known restrictions under copyright law, including all related and neighbouring rights. |
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
References
- ↑ Frances Robertson (2005-01). "The aesthetics of authenticity: printed banknotes as industrial currency". Technology and Culture 46 (1): 31-50.
Items portrayed in this file
depicts
1819
image/jpeg
3a822fc2f56b95bf3aa3ff3176aa8896eb89167f
58,261 byte
600 pixel
375 pixel
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:55, 8 January 2014 | 375 × 600 (57 KB) | wikimediacommons>Hohum | Cleanup |
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Orientation | Normal |
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Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | GIMP 2.8.10 |
File change date and time | 18:54, 8 January 2014 |
Exif version | 2.1 |
Supported Flashpix version | 1 |
Colour space | Uncalibrated |
Image width | 375 px |
Image height | 600 px |