File:Abaco - Museo scienza tecnologia Milano 01415 01.jpg
Original file (1,280 × 960 pixels, file size: 159 KB, MIME type: image/jpeg)
Captions
abaco - Soroban. ( ) | ||||||||||||||||||||||||
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Title |
abaco - Soroban. |
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Description |
Italiano: Abaco giapponese in legno costitutio da una base nella quale sono inserite nove colonne; ogni colonna contiene sei palline, separate da una parete divisoria in modo tale che una pallina rimanga isolata nella parte alta dell'abaco. Una lamina di avorio con iscrizioni ideografiche in corrispondenza di ogni colonna è posta al di sopra del divisorio.
Esecuzione di calcoli e operazioni matematiche
Il valore delle palline dalla posizione in cui si trovano nell'abaco. Ogni colonna rappresenta un ordine decimale; all'interno di una colonna, ogni pallina acquista valore quando si trova accostata al divisorio: le palline al di sotto del divisorio valgono un'unità, mentre la pallina al di sopra vale cinque unità.
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Date |
between 1850 and 1940 date QS:P571,+1500-00-00T00:00:00Z/6,P1319,+1850-00-00T00:00:00Z/9,P1326,+1940-00-00T00:00:00Z/9 |
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Medium | avorio | |||||||||||||||||||||||
Dimensions |
height: 12 cm (4.7 in); width: 93 cm (36.6 in) dimensions QS:P2048,12U174728 dimensions QS:P2049,93U174728 |
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Collection |
institution QS:P195,Q947082 |
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Accession number |
1415 |
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Object history | Mauro, Edi | |||||||||||||||||||||||
Source/Photographer | Catalogo collezioni (in it). Museoscienza.org. Museo nazionale della scienza e della tecnologia Leonardo da Vinci, Milano. | |||||||||||||||||||||||
Permission (Reusing this file) |
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 12:02, 21 May 2016 | 1,280 × 960 (159 KB) | Federico Leva (WMIT) (talk | contribs) | {{ICCD TRC | institution = {{institution:Museoscienza}} | permission = {{cc-by-sa-4.0}} | RSR1 = Brenni, Paolo | CTP = Matematica | CMPD = 2008 | INV1N = 1415 | CTC = Suanpan | NSC = L'abaco viene considerato come uno dei più antichi strumenti di... |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | NIKON |
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Camera model | E8700 |
Exposure time | 10/2,531 sec (0.0039510075069143) |
F-number | f/3.9 |
ISO speed rating | 50 |
Date and time of data generation | 14:22, 20 June 2006 |
Lens focal length | 41.1 mm |
Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop CS2 Windows |
File change date and time | 11:33, 28 October 2008 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.2 |
Date and time of digitizing | 14:22, 20 June 2006 |
Meaning of each component |
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Image compression mode | 3 |
APEX exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash fired, auto mode |
Supported Flashpix version | 1 |
Color space | sRGB |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 0 |
Focal length in 35 mm film | 160 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
Supported Flashpix version | 1 |
Image width | 1,280 px |
Image height | 960 px |
Date metadata was last modified | 12:33, 28 October 2008 |
IIM version | 2 |