General Information

Serial #

N/A

Part Number

1

Total Parts

4

AKA

N/A

Patents

N/A

General Description

METAL (INCLUDING BRASS) RESONATOR CYLINDERS; TURNED WOOD SUPPORTING STANDS (.1-.2); CAST METAL BASES (.3-.4)

Dimensions

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

Length

51.0 cm

Width

48.0 cm

Height

18.5 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Physics

Category

Acoustics

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 APPARATUS FROM MCMASTER UNIVERSITY. FOUNDED IN 1887, MCMASTER WAS ORIGIANLLY 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 A RESONATE CONDITION AT A CHARACTERISTIC WAVELENGTH. RESONATOR USED TO ANALYSE SOUND WITH RESPECT TO FREQUENCIES.

Technical

FIXED AND VARIABLE RESONATORS BY RUDOLPH KOENIG (1832-1901), PROBABLY BASED ON INSTRUMENT DEVELOPED BY HERMAN VON HELMHOLTZ (1821-94). RESONATORS ENABLED SOUNDS TO BE ANALYSED INTO THEIR CONSTITUENT FREQUENCIES. SOUND IS INTRODUCED VIA THE OPENING AT ONE END ( THE SIZE OF WHICH COULD BE ADJUSTED USING THE SLIDING PANEL), PRODUCED BY A TUNING FORK OR SIMILAR INSTRUMENT. THE AIR IN THE FIXED-END CYLINDER HAS A FUNDAMENTAL NOTE OF ITS OWN, BASED ON THE CHAMBER SIZE. THIS CHAMBER SIZE, AND THEREFORE THE SOUND, MAY BE ALTERED IN THE VARIABLE RESONATOR BY MEANS OF THE SLIDING END PANEL. (REF. 2). THE LARGE CYLINDER APPLIFIED THE SOUND.

Area Notes

Unknown

Details

Markings

Incised "RUDOLPH KOENIG/ A PARIS" on mounting for sliding panel

Missing

ADJUSTMENT POST MISSING FROM .2. From CA of 11/30/2001 by Matthew Bruce: Yes - .002 is missing part of the door mechanism

Finish

BRIGHT POLISHED CYLINDRICAL CHAMBERS; SLIDING METAL PANEL HAS BLACK FINISH

Decoration

N/A