General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

ALL METAL CONSTRUCTION.

Dimensions

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

Length

3.5 cm

Width

3.5 cm

Height

36.5 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

Koenig

Country

France

State/Province

Unknown

City

Paris

Context

Country

Canada

State/Province

Ontario

Period

PROBABLY USED C. 1890S+

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 TOHAMILTON, ONT. (REF. 1)

Function

WHEN STRUCK, TO AUDIBLY REPRODUCE A NOTE OF THE SELECTED PITCH.

Technical

EXAMPLE OF AN ADJUSTABLE PITCH TUNING FORK, MADE BY RUDOLPH KOENIG OF PARIS (1832-1901). SLIDING BLOCKS ON BOTH FORKS PERMITTED A RANGE OF TONES AND FREQUENCIES FROM UT 1 (BASS C) TO MI 1 (BASS E), INDICATES THE VIBRATIONS PER SECOND (VS), AND THE ACCURACY OF TUNING (+/- RANGE). POSTS AT EACH END ALLOW FOR CONNECTION TO ELECTRICAL APPARATUS. (REF. 2) THE RATIO MARKINGS REFER TO MUSICAL INTERVALS, AND WERE COMMON ON TUNING FORKS USED TO CREATE LISSAJOUS FIGURES OR FOR GRAPHICAL REPRESENTATION. (REF. 4)

Area Notes

Unknown

Details

Markings

" UT 1- MI-1/ RK " incised at base of fork. Both prongs of fork are incised on outside surface: one prong incised (top to bottom) "VS", "1:1/ UT1/ 128", "80:81/ 129,6", "24:25/ 133,3", "15:16/ 136,5", "9:10/ 142,2", "8:9/ RE1/ 144", "7:8/ 146,3", "6:7/ 149,3", "5:6/ 153,6" and "4:5/ M11/ 160"; opposite prong "VS", "1:1/ UT1", "80:81", "24:25", "15:16", "9:10", "8:9", "7:8", "6:7", "5:6" and "4:5".

Missing

APPEARS COMPLETE. From CA of 12/12/2001 by Matthew Bruce: No - appears complete

Finish

BRIGHT LACQUERED SLIDING BARS AND ADJUSTMENT FITTINGS.

Decoration

N/A