Grating, spectrograph
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1993.0318.001
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- OBJECT TYPE
- COATED/1200 GROOVES PER MM
- DATE
- 1950–1980
- ARTIFACT NUMBER
- 1993.0318.001
- MANUFACTURER
- Bausch & Lomb Optical Co.
- MODEL
- Unknown
- LOCATION
- Rochester, New York, United States of America
More Information
General Information
- Serial #
- N/A
- Part Number
- 1
- Total Parts
- 2
- AKA
- N/A
- Patents
- N/A
- General Description
- GLASS OPTICS; CAST METAL CASING. BLACK PAPER SHADE TAPED OVER ONE END OF GRATING.
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 19.8 cm
- Width
- 18.0 cm
- Height
- 17.8 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
- Bausch Lomb
- Country
- United States of America
- State/Province
- New York
- City
- Rochester
Context
- Country
- Canada
- State/Province
- Ontario
- Period
- THIS GRATING PROBABLY USED C. 1950S TO 1980S.
- Canada
-
USED IN THE NATIONAL RESEARCH COUNCIL'S SPECTROSCOPY LABORATORIES, WHOSE HIGH STANDARDS AND GROUND BREAKING RESEARCH HELPED TO ESTABLISH NRC'S INTERNATIONAL REPUTATION IN THIS FIELD. - Function
-
USED WITH SPECTROGRAPH TO SEPARATE LIGHT INTO CHARACTERISTIC WAVELENGTHS FOR PURPOSES OF OBSERVATION AND ANALYSIS. - Technical
-
PRISM EFFECT ON GLASS SURFACE PRODUCED BY SERIES OF FINE GROOVES, CUT ON PRECISE ANGLES. - Area Notes
-
Unknown
Details
- Markings
- "BL" crudely incised on top of rear levelling leg adjustment knob. Each adjustment knob bears scale divided 0-20+ in single increments./ "B&L/ # 157" and "Bausch & Lomb Optical Co./ # 157 1200/mm/ 21[degrees] " incised in back surface of grating. " JS " handwritten in pencil on grating edge.
- Missing
- NONE, SAVE MFR'S LABEL. From CA of 04/12/2000 by Myles Bailey: No - Complete
- Finish
- ROUGHLY TEXTURED BRONZE COLOUR METAL CASING;BRUSHED ALUMINUM ADJUSTMENT KNOBS ON LEVELLING FEET; FLAT BLACK FINISH ON MAT OR FRAME SURROUNDING GRATING FACE./ ALUMINIZED GLASS COATING ON SIDES.
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
Bausch & Lomb Optical Co., Grating, spectrograph, circa 1950–1980, Artifact no. 1993.0318, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/id/1993.0318.001/
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