cardioid condenser
Date1925
Inventory Number1308d
ClassificationMicroscope Optics
Subject
Maker
Carl Zeiss Jena
1904 - 1948
Maker
Carl Zeiss (company timeline)
founded 1846
Cultural Region
Place of Origin
Dimensions2.6 x 6.6 x 5.1 cm (1 x 2 5/8 x 2 in.)
case: 4 x 8.7 x 7 cm (1 9/16 x 3 7/16 x 2 3/4 in.)
case: 4 x 8.7 x 7 cm (1 9/16 x 3 7/16 x 2 3/4 in.)
Material
DescriptionAlso in the microscope case is a cardioid condenser made by Carl Zeiss Jena (1308d). It is stored in a fitted, black leather-covered box lined in deep blue velvet. The condenser is marked "Kardioid - Kond. 1925" and the box, "Kardioid - Kondensor / 1925." Both have the Carl Zeiss Jena logo in the achromat trademark.
Signedon box and on condenser: Carl Zeiss / Jena [in achromat trademark]
on box: GERMANY
on condenser: Germany
Inscribedon condenser: Nr. 12177
FunctionThe cardioid condenser was employed for the microscopic examination of colloidal solutions using a dark-ground method of observation.
ProvenanceJefferson Laboratory Preparation Room of Physics Department, Harvard University
Historical AttributesThis instrument was used in Jefferson Laboratory prep room of the Harvard Physics Department.
Carl Zeiss Jena
Date: circa 1910
Accessories: ocular: K 20x ; objectives (3): Zeiss 2 mm HI, Zeiss 40 apochromat, B&L 10x apochromat; Abbe condenser; iris diaphragm; standing case
Object number: 1365
Carl Zeiss, Optische Werkstätte, Jena
Date: circa 1902
Accessories: oculars (5); objectives (5); microplanar objectives (2); iris diaphragm; abbe condenser; collars and sleeves for photography; parts box; Leitz object micrometer (1308b); cardioid condenser (1308d); immersion oil bottle (1308c) ; Leitz erecting prism (1308e); standing case with key
Object number: 1308a
Carl Zeiss, Optische Werkstätte, Jena
Date: circa 1885
Accessories: objectives (4): A, C, F, and DD; 1 ocular: 5; small-parts box with ocular micrometer case; key; Abbe drawing camera in separate box (1125c); box to hold objectives; standing case.
Object number: 1125
Carl Zeiss, Optische Werkstätte, Jena
Date: circa 1898
Accessories: oculars (4): 2, 4, and compensating oculars 6, 8; objectives: AA, DD, a2, and apochromat HI 2.0 mm; triple nosepiece; swing-out condenser with iris-cylinder diaphragm; disk diaphragm and central stop diaphragm; filter; eyepiece micrometer, brush, spare stage clips; large mechanical stage (2006-1-0114b); centering glass (2006-1-0114c) with instructions; magnification tables (2); standing case; key; leather traveling case (2006-1-0114d).
Object number: 2006-1-0114a
Carl Zeiss Jena
Date: 1914
Accessories: objectives (2): HI 90 / 1.25, 16mm / .30; collar for photography (1309u); accessories box (1309j); quadruple nosepiece.
Object number: 1309i
Carl Zeiss, Optische Werkstätte, Jena
Date: circa 1879
Accessories: E. Leitz objective no. 3; oculars (2): 4, 6x; articulated substage mirror; condenser; slide mount for cylinder and cup diaphragms; disk diaphragm; cup diaphragms (2); glass slides (2); flat case
Object number: 1288
Carl Zeiss, Optische Werkstätte, Jena
Date: 1896
Accessories: instruction sheet; case
Object number: 2006-1-0114c
Carl Zeiss, Optische Werkstätte, Jena
Date: circa 1886
Accessories: oculars (2): Leitz 4xB, Winkel Zeiss kl 2; objectives (4): Leitz 7, 1/7a oil immersion, Zeiss B, HI 90 iris, B&L 8mm, 1/5, Grunow 1/6; B&L double nosepiece; parabolic reflector for stage; Abbe condensor with iris-cylinder diaphragm; articulated substage mirror; frame for cup diaphragms; cup diaphragms (2); Zeiss-B&L polarizing analyzer A6; Zeiss-B&L vertical illuminator; flat case; key.
Object number: 1044
Carl Friedrich Zeiss
Date: 1885
Accessories: case.
Object number: 1126b
VEB Carl Zeiss Jena
Date: circa 1960
Accessories: condenser turret; colored glass filters (3); clear matte glasses (2); polaroid discs (2); stage clips (4); wrenches (2); empty objective can; extra lids (2); case.
Object number: 1997-1-0009
