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Description found in Archives

Title

Hon. C.D. Howe watches a male scientist test the curve of a lens by interference fringes at the Instruments Division at the Canadian Arsenals Ltd. optical plant. 

Online (1)

Arrangement structure

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Item (linked) part of

National Film Board of Canada. Still Photography Division [graphic material] (R1196-14-7-E)

Bilingual equivalent

L'honorable C.D. Howe observe un scientifique vérifiant la courbure d'unelentille par lignes d'interférence à la Division des instruments optiques des Arsenaux canadiens Limitée

Date(s)

Apr. 1941

Place

Toronto, Ont.

Place of creation

No place, unknown, or undetermined

Extent

1 photograph
Negative Film B/W - cellulose nitrate

Language of material

English

Conditions of access

Graphic (photo)
90: Open
nil
Item no. (creator)
WRM 722
Other accession no.
1971-271 NPC

Terms of use

Credit: National Film Board of Canada. Photothèque / Library and Archives Canada /
Restrictions on use: nil
Copyright: Expired

Additional name(s)

Photographer: Unknown.

Additional information

Series title
WRM

Signatures and inscriptions
"OPTICAL INSTRUMENTS - TORONTO, ONT. All glass surfaces in optical instruments are worked to such a high degree of accuracy that only light waves are sufficiently delicate as a method of measurement. Hon C.D. Howe watches one of the scientists to test the curve of a lens by interference fringes. (Instruments Division, Canadian Arsenals Ltd., Toronto, Ont.)

Source

Government

Other system control no.

DAPDCAP562424

MIKAN no.

3195767