File:ETH-BIB-Clark-Normalelement ETHZ PHYS 0821.tiff
Original file (8,368 × 5,584 pixels, file size: 49.85 MB, MIME type: image/tiff, 2 pages)
Captions
Summary
Object
Clark cell | |||||||||||||||||||||||||||
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Artist |
gefertigt nach den Vorgaben der Physikalisch-Technischen-Reichsanstalt |
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Title |
Clark-Normalelement, Nr. 733 (links), 240 (rechts) |
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Object type | galvanic cell | ||||||||||||||||||||||||||
Description |
Galvanische Zelle, die eine stabile Gleichspannung liefert. Sie diente in der Frühzeit der Elektrotechnik (ca. 1893-1908) als Referenzspannungsquelle. Dieses Clark-Normalelement Nr. 240 aus der Serie Nr. 240-242 wurde an Herrn Prof. Pernet an der ETH Zürich ( https://hls-dhs-dss.ch/de/articles/031996/2010-09-27/ ) geliefert. |
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Date | 1892 (Nr. 240) | ||||||||||||||||||||||||||
Medium | Messing, Glas, Quecksilber | ||||||||||||||||||||||||||
Dimensions |
height: 130.5 cm (51.3 in); width: 72 cm (28.3 in); depth: 114 cm (44.8 in) dimensions QS:P2048,130.5U174728 dimensions QS:P2049,72U174728 dimensions QS:P5524,114U174728 / Gewicht: 880 g, 869 g |
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Collection |
institution QS:P195,Q684773 |
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Current location |
ETH-Bibliothek |
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Accession number |
ETHZ_PHYS_0821 |
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Place of creation | O. Wolff, Berlin | ||||||||||||||||||||||||||
Object history | Departement Physik, ETH-Zürich. Dieses Clark-Normalelement Nr. 240 aus der Serie Nr. 240-242 wurde an Herrn Prof. Pernet an der ETH Zürich geliefert | ||||||||||||||||||||||||||
Inscriptions | Normal-Element nach L. Clark (Gravur), O. Wolff Berlin 733, O. Wolff Berlin 240 (Modellnummer / Kennnummer), 1,4234 int. Volt bei 20,0°C Prüfung durch Eidg. Amt für Mass u. Gewicht 7. April 1949 (Weiteres), 1892 (Reliefschrift / Hochschrift) | ||||||||||||||||||||||||||
Notes |
Begleitmaterial: Dr. St. Lindeck: XII. Elektrische Messinstrumente. Beiblatt zur Zeitschrift für Instrumentenkunde, Heft 24, 15.12.1896, S. 212-214. // Lieferverzeichnis von Otto Wolff, Serie Nr. 240-242. // https://www.historische-messtechnik.de/hilfsgeraete-und-zubehoer/zubehoer/normalelemente/00994.php |
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References | https://hls-dhs-dss.ch/de/articles/031996/2010-09-27/ |
Photograph
DescriptionETH-BIB-Clark-Normalelement ETHZ PHYS 0821.tiff | Digitale Fotografie, Bildnachweis: Sammlung wissenschaftlicher Instrumente und Lehrmittel, ETH-Bibliothek, ETH Zürich, Foto: Stephan Bösch | |||
Date | ||||
Source |
E-Pics Sammlung Wissenschaftlicher Instrumente und Lehrmittel http://doi.org/10.21264/ethz-a-000011858
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Author | ETH-Bibliothek, Foto: Stephan Bösch | |||
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 | 19:45, 31 December 2021 | 8,368 × 5,584, 2 pages (49.85 MB) | ETH-Bibliothek (talk | contribs) | {{Art Photo |wikidata = Q898656 |artist = gefertigt nach den Vorgaben der Physikalisch-Technischen-Reichsanstalt |title = Clark-Normalelement, Nr. 240 |description = Galvanische Zelle, die eine stabile Gleichspannung liefert. Sie diente in der Frühzeit der Elektrotechnik (ca. 1893-1908) als Referenzspannungsquelle. Dieses Clark-Normalelement Nr. 240 aus der Serie Nr. 240-242 wurde an Herrn Prof. Pernet an der ETH Zürich ( https://hls-dhs-dss.ch... |
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Metadata
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Camera manufacturer | LEICA CAMERA AG |
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Camera model | LEICA SL2 |
Exposure time | 1/125 sec (0.008) |
F-number | f/16 |
ISO speed rating | 100 |
Date and time of data generation | 16:50, 25 March 2021 |
Lens focal length | 50 mm |
Width | 8,368 px |
Height | 5,584 px |
Bits per component |
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Compression scheme | LZW |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Number of rows per strip | 128 |
Horizontal resolution | 240 dpi |
Vertical resolution | 240 dpi |
Data arrangement | chunky format |
Software used | GIMP 2.10.30 |
File change date and time | 20:37, 31 December 2021 |
Exposure Program | Manual |
Exif version | 2.31 |
Date and time of digitizing | 16:50, 25 March 2021 |
Meaning of each component |
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APEX shutter speed | 6.9657842861166 |
APEX aperture | 8 |
APEX exposure bias | 0.3 |
Maximum land aperture | 2.9708536585366 APEX (f/2.8) |
Metering mode | Pattern |
Light source | Other light source |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Focal plane X resolution | 2,325.128440367 |
Focal plane Y resolution | 2,325.128440367 |
Focal plane resolution unit | 3 |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Custom image processing | Normal process |
White balance | Manual white balance |
Focal length in 35 mm film | 50 mm |
Scene capture type | Standard |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
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