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Description |
English: Single Lens Microscope, called "Wilson's screw-barrel microscope", after an English manufacturer who popularized it. Seven lenses (5 — 00) are shown at the bottom of the upper half. The smaller the lens, the more curved was the surface and thus the stronger was the magnification. For each lens, there was a special mount (b, q). Focussing was performed by turning the large screw against the spring. In the assembled state shown in the bottom half (with objects; strip with circles) the eye of the observer would be on the left side, an illumination on the right side.
Deutsch: Einlinsiges Mikroskop, genannt "Wilson's screw-barrel microscope" (Wilsons Schraub-Rohr Mikroskop), nach einem englischen Hersteller. Sieben Linsen (5 — 00) sind am unteren Rand des oberen Bilds zu sehen. Je kleiner die Linse, desto stärker war ihre Krümmung und somit die Bildvergrößerung. Jede hatte eine eigene Fassung (b, q). Scharfstellen wurde durch drehen der großen Schraube gegen eine Metallfeder erreicht. Im zusammengesetzten Zustand im unteren Bild (mit Objekten; Streifen mit Scheibchen) wäre das Auge des Beobachters links, eine Beleuchtung rechts.
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Date | 1762 |
Source | Original Source:
Martin Frobenius Ledermüller: Mikroskopische Gemüths- und Augen-Ergötzung: bestehend, in ein hundert nach der Natur gezeichneten und mit Farben erleuchteten Kupfertafeln, sammt deren Erklärung... (Nürnberg) Christian de Launoy. 1761. pp 202. Nachleese...1762. pp.94. (This is plate 5 from the 'Nachleese'.) Source of this reproduction and the original citation: . {{{title}}}. |
Author | Joseph G. Gall. |
|Permission=
The official position taken by the Wikimedia Foundation is that "faithful reproductions of two-dimensional public domain works of art are public domain, and that claims to the contrary represent an assault on the very concept of a public domain". For details, see Commons:When to use the PD-Art tag. |
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Public Domain
EXIF data: | |
File name | wilsons_screw_barel_microscope_1761.jpg |
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Size, Mbytes | 0.3556005859375 |
Mime type | image/jpeg |
Orientation of image | 1 |
Image resolution in width direction | 300 |
Image resolution in height direction | 300 |
Unit of X and Y resolution | 2 |
Color space information | 65535 |
Exif image width | 1608 |
Exif image length | 2085 |
Software used | Adobe Photoshop 7.0 |
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