General Information

Serial #

524A4

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

METAL CASING; GLASS GRATING.

Dimensions

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

Length

20.0 cm

Width

17.0 cm

Height

17.0 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.1960S- MID 1980S.

Canada

USED IN THE NATIONAL RESEARCH COUNCIL'S SPECTROSCOPY LABORATORIES, WHOSE HIGH STANDARDS AND GROUND BREAKING RESEARCH HELPED TO ESTALISH 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 SURFACE PRODUCED BY SERIES OF FINE GROOVES, CUT ON PRECISE ANGLES. THIS GRATING HAS A CONCAVE RADIUS, AND 1220 GROOVES PER MM ARE RULED ON ITS SURFACE. IT IS COATED WITH MGF2.

Area Notes

Unknown

Details

Markings

"X B= 1380 [degrees Angstrom]/ [symbol] B= 4[degrees] 45'/ MgF2= coated/ MF" handwritten in black marker./ "M F" incised crudely on rear adjustment knob; "R" incised crudely on casing back. Mfr's decal on back of grating reads "BAUSCH & LOMB OPTICAL CO./ ROCHESTER, N.Y., U.S.A./ [logo]/ 33-52-59-71/ CATALOGUE NO./ 524A4/ SERIAL NO./ 1200/ MM/ GROOVES/MM / 4[degrees] 45'/ BLAZE ANGLE/ 2998.3/MM / CONCAVE RADIUS/ BLAZE [right facing arrow]/ MgF2 ". "524H4" handwritten in pencil on edge of grating.

Missing

NONE. From CA of 04/12/2000 by Myles Bailey: No - Complete

Finish

BRUSHED SILVER METAL FINISH ON CASING.

Decoration

N/A