General Information

Serial #

N/A

Part Number

2

Total Parts

2

AKA

N/A

Patents

N/A

General Description

ALL METAL, SAVE GLASS LENSES AND LEAD (WEIGHT) INSERT IN BASE. SYNTHETIC EXTENSION ON INNER TUBE OF STAND.

Dimensions

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

Length

15.5 cm

Width

11.0 cm

Height

42.0 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Physics

Category

Demonstration & teaching equipment

Sub-Category

N/A

Manufacturer

AKA

Laurent

Country

France

State/Province

Unknown

City

Paris

Context

Country

Canada

State/Province

Ontario

Period

THESE LENSES PROBABLY USED C. 1870S- 1880S +.

Canada

PART OF A COLLECTION OF PHYSICS LABORATORY AND CLASSROOM DEMONSTRATION APPARATUS FROM MCMASTER UNIVERSITY. FOUNDED IN 1887 MCMASTER WAS ORIGINALLY A BAPTIST INSTITUTION, AND WAS LOCATED IN TORONTO. IN 1930 THE UNIVERSITY AND ITS STUDENT POPULATION OF 500 WAS MOVED TO HAMILTON, ONT. (REF. 1)

Function

USED TO DEMONSTRATE SELECTED PROPERTIES OF LIGHT AND OPTICS.

Technical

TWO CONCAVE LENSES, THE HEIGHT, ORIENTATION AND ANGLE OF WHICH MAY BE ADJUSTED.IMAGES VIEWED THROUGH THESE LENSES APPEAR BOTH SMALLER AND FURTHER AWAY. THESE EXAMPLES BELIEVED TO BE BY LEON LAURENT, A WELL KNOWN MFR OF OPTICS EQ., ESPECIALLY POLARIMTERS AND SACCHARIMETERS. (REF. 1)

Area Notes

Unknown

Details

Markings

" 2 " (or curving arrow) appears in pencil on one edge of lens.

Missing

From CA of 12/03/2001 by Matthew Bruce: No - appears complete

Finish

SURFACE OF STAND AND SUPPORTING BRACKET MAY BE PLATED. LENS HOUSING HAS DULL BLACK FINISH.

Decoration

N/A