General Information

Serial #

PROTOTYPE

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

METAL (ALUMINUM) CASINGS/ METAL SWITCHES & PARTS/ SYNTHETIC CARRYING HANDLE, SWITCHES & PARTS/ GLASS OPTICS

Dimensions

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

Length

30.0 cm

Width

26.0 cm

Height

56.8 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

University

Country

Canada

State/Province

Ontario

City

Toronto

Context

Country

Canada

State/Province

Ontario

Period

C. 1968-1969 +

Canada

A prototype instrument designed and built at a Canadian university for use by the Atmospheric Environment Service. Now such instruments, mfd. by Sci-Tec of Saskatoon, are used world wide. The Meteorological Service of Canada is the world calibration centre for all ozone observing equipment and all measurements are referred back to the MSC facility in Toronto (Ref. 1).

Function

A spectroscopic device used to photometrically measure relative intensities of spectral lines created by atmospheric ozone, used to monitor levels of ozone in the upper atmosphere.

Technical

The Dobson spectrophotometer, developed in the1930s, was the standard instrument until the1960s, when advances in optical design and electronics led to the development of the Brewer spectrophotometer by Alan Brewer of the University of Toronto, and David Wardle, C.T. McElroy and J.B. Kerr of the Atmospheric Environment Service. The latter instrument was a significant improvement, allowing virtually simultaneous observations of sun and sky with more lines being targeted and sequenced in few minutes (Ref. 1).

Area Notes

Unknown

Details

Markings

BLACK IMPRESSION PRINTED LABEL READS "OZONE U.V. SPECTROPHOTOMETER NO. 2"/ BLUE & GREEN LABELS FOR CONTROL FUNCTIONS

Missing

ELECTRONICS COMPONENT

Finish

METALLIC LOWER SECTION/ WHITE PAINTED UPPER SECTION/ WHITE SWITCHES/ GOLD COLOURED OPTICAL TUBE/ METALLIC PARTS/ BLACK HANDLE

Decoration

N/A