ultraviolet light dosimeter tubes
Date1900-1950
Inventory Number1998-1-0641b
ClassificationDosimeter
Subject
Maker
American
Cultural Region
Place of Use
Dimensionsstorage: 6.5 x 36.2 x 6.5 cm (2 9/16 x 14 1/4 x 2 9/16 in.)
Material
DescriptionTwo glass tubes with the dried remains of a purple substance stoppered by old cotton and cloth. Stored in a cardboard tube.
Signedunsigned
Inscribedon cardboard tube: Handle Carefully Glass [in several languages]
on cardboard tube addressing note: H. Landsberg / The Pennsylvania State College / Mineral Industries Experimental Station / State College, Pa. / To Mr. David L. Arenberg / Blue Hill Observatory . Milton, Mass.
FunctionThis is part of a chemical dosimeter for ultraviolet light. The dosimeter would hold glass tubes with a substance that reacted to ultraviolet light changing its color in proportion to its exposure to it. One could determine the intensity of ultraviolet radiation and total exposure by analyzing the change in color of the chemical after a period of time.
B.A.S.F. Ammoniaklaboratorium
Date: 1932-1935
Accessories: 2 cases: a felt-lined silver metal tube and a larger brown cardboard tube
Object number: 1996-1-0725
Date: 1890-1930
Object number: RS0199
Victoreen Instrument Company
Date: circa 1940
Accessories: manuals (2); correction table
Object number: VT4808
Percy Williams Bridgman
Date: dated 1916
Object number: 1999-1-0045n
American
Date: early 20th-mid 20th Century
Object number: 1997-1-1102