diode?
Date1929
Inventory NumberVT1818
ClassificationVacuum Tube
Maker
Raytheon Manufacturing Company
founded 1925
Cultural Region
Place of Origin
Dimensions20 × 12.7 × 12.7 cm (7 7/8 × 5 × 5 in.)
DescriptionMODEL MADE FOR HULL-SMITH INTERFERENCE TRIAL, Smith Exhibit #5
Smith College Museum of Art
Date: dated 1971
Accessories: black frame
Object number: 1998-1-1187
Smith & Beck
Date: circa 1850
Accessories: Achromatic condensor; a darkfield condenser (Wenham's parabolic reflector); a substage set of aperture stops on a swingaway vane inside a sleeve; a nickel tweezers; a stage forceps; and a bull's eye condenser with a stand, a glass tray for the stage, Varley live box; case.
Object number: 1059
Bausch & Lomb Optical Company
Date: 1897-1908
Accessories: ocular: 2; objectives (6): B. & L. 1/12, 1/2, 2, Reichert No. 3 and No 7a (missing), Spencer & Smith 1/4, 1; immersion oil in canister; blue filter; square cover glasses; dark-field stop; empty pillbox for cover slips; 5 Triple Alliance glass slides in paper; magnification table; case; key.
Object number: 1387
Asa Smith
Date: 1852
Accessories: matte board
Object number: 2001-1-0001
John Firth and Company
Date: circa 1918
Object number: RS0909
Alexandre Brongniart
Date: 1829
Object number: 1998-1-1442
Établissement Géographique de Bruxelles
Date: 1830-1880
Object number: 1998-1-1443
R. & J. Beck
Date: circa 1884
Accessories: oculars (2); double nosepiece; mahagony case with various parts (see description)
Object number: 1083