constant deviation spectrometer
Date1925-1935
Inventory Number1997-1-0074
ClassificationSpectrometer
Subject
Maker
A. Jobin & G. Yvon
founded 1923
Cultural Region
Place of Origin
Dimensions38.5 × 34 × 36.7 cm (15 3/16 × 13 3/8 × 14 7/16 in.)
Material
DescriptionThis instrument is made of two optical tubes: one has an adjustable slit (from which light would enter the instrument) and the other is a telescope. Inside the casing is a prism (perhaps of the Pellin Broca type) that most likely rests on a rotating platform. This rotating system is linked to the outside graduated circle, which has four different scales. Both prism and circle rotate with the help of the front knob located under the telescope. An arrow-pointer, fixed to a spring and pulley, moves sideways from one scale to the other. There is a small electric lamp on the side of the casing. The instrument is supported by a telescoping stand on a tripod.
Signedon top: SPECTROMETRE / A. JOBIN & G. YVON / INGENIEURS-CONSTRUCTEURS / PARIS
FunctionA spectrometer is used in studying the properties of substances by means of light spectra.
For more examples on types of spectrometers and how they work, see the following website.
For more examples on types of spectrometers and how they work, see the following website.
Bausch & Lomb Optical Company
Date: circa 1920
Object number: 1996-1-0657
Hilger and Watts, Ltd.
Date: circa 1963
Accessories: acrylic case; instruction manuals for spectrometer (a) and microscope (b) are in the library; extra silver knob in plastic bag
Object number: 1999-1-0021a
Hilger and Watts, Ltd.
Date: circa 1963
Accessories: acrylic case; instruction manuals for spectrometer (a) and microscope (b) are in the library; extra silver knob in plastic bag
Object number: 1999-1-0021c
Spencer Lens Company
Date: circa 1938
Accessories: carrying box; instruction manual
Object number: 1998-1-0105
