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Ingenium,
1998.0275.002
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- OBJECT TYPE
- N/A
- DATE
- Unknown
- ARTIFACT NUMBER
- 1998.0275.002
- MANUFACTURER
- JOYCE, LOEBL & CO. LTD.
- MODEL
- Unknown
- LOCATION
- Gateshead-on-Tyne, England
More Information
General Information
- Serial #
- N/A
- Part Number
- 2
- Total Parts
- 2
- AKA
- N/A
- Patents
- N/A
- General Description
- METAL, GLASS & SYNTHETIC COMPONENTS.
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 112.0 cm
- Width
- 66.0 cm
- Height
- 138.0 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Astronomy
- Category
- Research
- Sub-Category
- N/A
Manufacturer
- AKA
- JOYCE
- Country
- England
- State/Province
- Unknown
- City
- Gateshead-on-Tyne
Context
- Country
- Canada
- State/Province
- Ontario
- Period
- THIS INSTRUMENT PRESUMABLY USED C. 1960S+. THIS TYPE MFD 1950S-1970S, AND STILL USED IN 1990S +
- Canada
-
PART OF A COLLECTION OF PHYSICS LABORATORY AND CLASSROOM DEMONSTRATION APPARATUS FROM MCMASTER UNIVERSITY. FOUNDED IN 1887 MCMASTER WAS ORIGINALLY A BAPTIST INSTITUTION, AND WAS LOCATED IN TORONTO. IN 1930 THE UNIVERSITY AND ITS STUDENT POPULATION OF 500 WAS MOVED TO HAMILTON, ONT. ( REF. 1) - Function
-
TO MEASURE THE PHOTOGRAPHIC DENSITY OF SPECTRAL LINES ON A NEGATIVE WHICH ARE TOO FAINT TO BE SEEN WITH THE NAKED EYE. - Technical
-
JOYCE LOEBL, BASED IN THE NORTH EAST OF ENGLAND, BUILT 1000S OF MICRODENSITOMETERS DURING THE 1950S- 1970S, AND THEY WERE SOLD AND USED WORLDWIDE. MICRODENSITOMETERS WERE THE LAST PRE-COMPUTER DEVICES FOR SPECTRAL ANALYSIS: THEY WERE REPLACED IN THE 1970S BY SCANNING DEVICES CONTROLLED BY A PDP COMPUTER. THE MICRODENSITOMETER IS CONSIDERED BY MANY TO BE THE MOST PRECISE INSTRUMENT FOR THE MEASUREMENT OF GREY SCALE ON PHOTOGRAPHIC EMULSIONS. (REF. 2) - Area Notes
-
Unknown
Details
- Markings
- NO MARKINGS
- Missing
- N/A
- Finish
- SMOOTH GREEN-GREY ENAMEL FINISH
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
JOYCE, LOEBL & CO. LTD., Stand, Unknown Date, Artifact no. 1998.0275, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1998.0275.002/
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