File:Abacus Base Five Ten.PNG
Abacus_Base_Five_Ten.PNG (517 × 246 pixels, file size: 86 KB, MIME type: image/png)
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Summary
[edit]DescriptionAbacus Base Five Ten.PNG | This is the small abacus of Al-Khwārizmī abacus with base-five/ten. All upper beans have the five values, and all down beans has the ten values. Hypothetically, this kind of abacus was used on the paleography of modern numerals. It is assumed to have originated because humans have ten fingers. |
Date | born around 780 and died around 850 |
Source | http://en.wikipedia.org/wiki/Muhammad_ibn_Musa_al-Khwarizmi |
Author | Al-Khwārizmī |
Licensing
[edit]Public domainPublic domainfalsefalse |
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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.
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This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. |
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 00:33, 11 April 2008 | 517 × 246 (86 KB) | Robertolyra (talk | contribs) | {{Information |Description=This is the small abacus of Al-Khwārizmī abacus with base-five/ten. All upper beans have the five values, and all down beans has the ten values. Hypothetically, this kind of abacus was us |
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