Lens
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1990.0333.001
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- OBJECT TYPE
- DOUBLET/LONG FOCAL LENGTH
- DATE
- 1941
- ARTIFACT NUMBER
- 1990.0333.001
- MANUFACTURER
- Unknown
- MODEL
- Unknown
- LOCATION
- Unknown
More Information
General Information
- Serial #
- N/A
- Part Number
- 1
- Total Parts
- 1
- AKA
- N/A
- Patents
- N/A
- General Description
- BRASS CASING; GLASS LENS; CORK WASHER; STEELSCREWS; PHENOL RESIN & LINEN LENS CAP.
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 34.7 cm
- Width
- 34.7 cm
- Height
- 17.5 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
- Canada
- State/Province
- Ontario
- Period
- THIS LENS KNOWN TO HAVE BEEN USED C. 1941-1946; PROBABLY USED C. 1920S+
- Canada
-
THIS LENS USED AT BOTH DOMINION OBSERVATORY AND NATIONAL RESEARCH COUNCIL OF CANADA LABORATORIES. - Function
-
SERVED AS OPTICAL ELEMENT IN OPTICAL LAB BENCH OR COLLIMATOR. - Technical
-
LONG FOCAL LENGTH LENS (BELIEVED TO BE APPROX. 30 FEET) BORROWED FROM DOMINION OBSERVATORY FOR USE BY NRC. SPECIALTY LENSES WERE DIFFICULT TO OBTAIN DURING THE WAR: THE CELL FROM DOM OBS WAS SET IN A BRASS CASING MADE BY WALT TAYLOR, NRC MACHINIST PRIOR TO ITS USE IN STANDARDS LAB'S COLLIMATOR. - Area Notes
-
Unknown
Details
- Markings
- None.
- Missing
- NONE.
- Finish
- NATURAL BRASS FINISH. LENS CAP IS BROWN.
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
Unknown Manufacturer, Lens, before 1941, Artifact no. 1990.0333, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1990.0333.001/
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