Galvanometer
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1969.0298.001
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- OBJECT TYPE
- DIFFERENTIAL/HORIZONTAL/MOVING IRON
- DATE
- 1882–1930
- ARTIFACT NUMBER
- 1969.0298.001
- MANUFACTURER
- Ahearn & Soper
- MODEL
- Unknown
- LOCATION
- Ottawa, Ontario, Canada
More Information
General Information
- Serial #
- N/A
- Part Number
- 1
- Total Parts
- 1
- AKA
- N/A
- Patents
- N/A
- General Description
- EBONITE BASE/ BRASS FACE CASING, LEVELING KNOBS, TERMINALS & SCALE/ METAL POINTER/ GLASS
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- N/A
- Width
- 20.5 cm
- Height
- 9.5 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Communications
- Category
- Telegraphy
- Sub-Category
- N/A
Manufacturer
- AKA
- Ahearn Soper
- Country
- Canada
- State/Province
- Ontario
- City
- Ottawa
Context
- Country
- Unknown
- State/Province
- Unknown
- Period
- CIRCA 1885
- Canada
-
ARTIFACT WAS BUILT IN CANADA BY ONE OF CANADA'S FOREMOST ELECTRIC ENGINEERS AND THE INVENTOR OF THE ELECTRIC COOKING RANGE, THOMAS AHEARN. - Function
-
AN INSTRUMENT FOR DETECTING OR MEASURING A SMALL ELECTRIC CURRENT BY MOVEMENTS OF A POINTER - Technical
-
MOVING IRON GALVANOMETERS WERE 1ST DISCUSSED BY G.C. PAGE (1845) BUT DIDN'T TAKE OFF COMMERICALLY'TIL 1880S. IDEA IS SIMILAR IN PRINCIPLE TO MARCEL DEPREZ'S "FISHBONE GALVANOMETER". A PIECE OF SOFT IRON WAS PUT IN A SOLENOID COIL BETWEEN POLES OF A POWERFUL PERMANENT MAGNET. (SEE COMPLETE WS IN S.I. & O:DRIVE S.I.) - Area Notes
-
Unknown
Details
- Markings
- ON FACE: GRADUATED SCALES; TOP: '0 TO 90' & '90 TO 0'; BOTTOM: '0 TO 90' & '90 TO 0'/ ON TOP CROSS PIECE: MANUFACTURER: 'AHEARN & SOPER/ OTTAWA, ONT'
- Missing
- N/A
- Finish
- Unknown
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
Ahearn & Soper, Galvanometer, circa 1882–1930, Artifact no. 1969.0298, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1969.0298.001/
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