File:GrammeMachine.jpg
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Summary
DescriptionGrammeMachine.jpg |
English: The Gramme machine or Gramme dynamo, an electrical generator designed by Belgian inventor Zénobe Gramme in 1871. It was the first machine to be used industrially to generate power. His innovation was to use many armature windings, wound on a doughnut shaped armature, and switched with a many segmented commutator, to smooth the output waveform, producing nearly constant DC power. This shows a hand cranked model from the 1870s designed for use in laboratories, it's output was equivalent to "eight ordinary Bunsen elements [batteries]". It used laminated permanent magnets invented by Jamin.
Español: Máquina de Gramme
For more information see Hippolyte Fontaine (1878) Electric Lighting: A Practical Treatise, translated from French by Paget Higgs, E. & F.N. Spon, London, UK, p.86 |
Date | |
Source | Own work |
Author | Tamorlan |
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Public domainPublic domainfalsefalse |
I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
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12 April 2007
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 06:39, 15 December 2007 | 2,592 × 3,888 (422 KB) | Tamorlan | {{Information |Description= {{en|'''Gramme machine''' o '''Gramme dynamo'''}} {{es|Máquina de Gramme}} |Source=self-made |Date= 2007-04-12 |Author= Tamorlan |Permission= see below |other_versions= }} Category:Electrical generators |
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Camera manufacturer | Canon |
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Camera model | Canon EOS 400D DIGITAL |
Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/6.3 |
ISO speed rating | 1,600 |
Date and time of data generation | 17:30, 12 April 2007 |
Lens focal length | 35 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop CS Windows |
File change date and time | 07:37, 15 December 2007 |
Y and C positioning | Co-sited |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Manual white balance |
Scene capture type | Standard |
Exposure Program | Normal program |
Exif version | 2.21 |
Date and time of digitizing | 17:30, 12 April 2007 |
Shutter speed | 5.9068908691406 |
APEX aperture | 5.3106994628906 |
Exposure bias | 0 |
Metering mode | Partial |
Flash | Flash did not fire, compulsory flash suppression |
Color space | sRGB |
Focal plane X resolution | 4,453.6082474227 |
Focal plane Y resolution | 4,433.2953249715 |
Focal plane resolution unit | inches |
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