|
Date: |
|
Description: | L.O.206. (spurious departmental catalogue number on a gummed label, removed, added by Dr Dereck Stewart at the time of the transfer there is no catalogue entry or number.). A small round gummed label with the number 5R, removed. Makers name and serial number stamped into the brass stage, W. WILSON LONDON. No2.
MANU W. Wilson. late 19th early 20th century London England DES after FRAUNHOFER,Joseph,von. circa 1814 Utzschneider Optical Institut, Benediktbeuern, Bavaria, Germany. DES after WOLLASTON,William,Hyde,Doctor. 1802 London, England. This is a nice example of an early Wilson instrument with counterpoised telescopes to avoid strain when rotated.. It should be noted that instruments of this type were also referred to as goniometers. It has an optical train comprised of a collimator slit which allows light from a suitable source to pass through a telescope which focusses the light onto a prism mounted on the central axis of the instrument. The light is dispersed by the prism and is viewed by the observer through a second telescope which is on a graduated scale with a vernier so that the angle of refraction can be accurately measured. | License: | http://www.hmag.gla.ac.uk/spirit/rights/ | Publisher: | Hunterian Museum and Art Gallery, University of Glasgow | Rights holder: | Hunterian Museum and Art Gallery, University of Glasgow | Subjects: | SCIENTIFIC COLLECTION : | Source: | Hunterian Museum | Creator: | Hunterian Museum and Art Gallery, University of Glasgow | Identifier: | http://www.huntsearch.gla.ac.uk/cgi-bin/... | Language: | en-GB | Go to resource |
|
More Like this...
-
-
-
-
-
-
-
-
Photometer
LO.155., (Old departmental catalogue number…
-
-
|