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Ingenium, 1969.0115.005
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OBJECT TYPE: OBJECTIVE
DATE: Unknown
ARTIFACT NUMBER: 1969.0115.005

MANUFACTURER: Unknown
MODEL: Unknown
LOCATION: Unknown

More Information

General Information

Serial #: N/A
Part Number: 5
Total Parts: 26
AKA: N/A
Patents: N/A
General Description: Brass, glass/ .5 pt: case: brass

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length: 4.9 cm
Width: 2.6 cm
Height: 2.6 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Physics
Category: Light & electromagnetic radiation
Sub-Category: N/A

Manufacturer

AKA: Unknown
Country: Unknown
State/Province: Unknown
City: Unknown

Context

Country: Worldwide
State/Province: Unknown
Period: c.1860
Canada: Used in one of the Departments of Queen's University, Kingston, Ont.
Function: To observe biological specimens in minute detail./ .5-.7 corrective collar on objective consists of ring attached to the barrel which when turned alters the distance between the front lens & the one behind. used 1840-1860, to allow for aberration caused by irregular cover-slip thickness (ref.1,pg.69).
Technical: Wenham introduced his beam splitting prism in 1861 for use in a binocular microscope. This resulted in one tube straight & one inclined. Wenham microscopes were popular for the rest of the century because the prism could be removed to restore monocular vision, important for use at higher powers & resolution (ref.1,pg73-74)
Area Notes: Unknown

Details

Markings: Scale etched on ring from 0-9 in increments of 1, under ring is etched 'Uncovered', & Under this etched '4/10'/ .5PT CASE: 'Smith & Beck/ 6 Coleman St./ LONDON/ 2083' Etched on lid, etched on top & bottom '4/10'.
Missing: N/A
Finish: Lacquered brass
Decoration: N/A

CITE THIS OBJECT

If you choose to share our information about this collection object, please cite:

Unknown Manufacturer, Lens, Unknown Date, Artifact no. 1969.0115, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/id/1969.0115.005/

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