Image
Category
Collection
Maker
Object type
Place
Material
Date

Brass demonstration polariscope with biaxial crystal

1830-1880

Newton & Co. Polariscope

1865-1875

Lantern Polariscope

1870-1880

Plate cut from tourmaline uniaxial crystal

Plate cut from barytes biaxial crystal

Plate cut from dioptase uniaxial crystal

Plate cut from 0.5mm calcite uniaxial crystal

Polariscope by Reichert no.2472

Plate cut from zircon uniaxial crystal

Plate cut from 1mm calcite uniaxial crystal

Small polariscope, by C.D. Ahrens

Norrenberg Polariscope especially adapted for crystallographic work

Rutley's polariscope, no polarizing nicol prism

Airy polariscope modified by Brady

Plate cut from anhydrite biaxial crystal

Wollaston's polariscope No. 948

1850-1899 (estimated)

Polariscope (c.1840-50)

1840-1850

Polariscope (c.1850)

1850

Plate cut from 3mm calcite uniaxial crystal

Plate cut from brucite uniaxial crystal

Polariscope, wood and glass

1850-1924

Norrenberg Polariscope by Soleil

Plate cut from axinite biaxial crystal

Polariscope (c.1840-50)

1840-1850

Plate cut from 8mm quartz uniaxial crystal

Plate cut from apatite uniaxial crystal

Plate cut from corundum uniaxial crystal

Plate cut from meionite uniaxial crystal

Plate cut from hemitrope calcite uniaxial crystal

Plate cut from aragonite biaxial crystal

Polariscope

1840-1850

Plate cut from apophyllite uniaxial crystal

Plate cut from beryl uniaxial crystal

Large projection polariscope in three mahogany cabinets

1875-1880

Plate cut from adularia biaxial crystal

Toy polariscope

1828-1830

Hand polariscope

1845-1855

Plate cut from left-handed quartz uniaxial crystal

Norrenberg polariscope with Wheatstone's improvements

1876

Glass plate used as polariser, in case

1850-1924

Plate cut from right-handed quartz uniaxial crystal

Lantern polariscope

Polariscope

1850-1924

Complete Jessop-Leech Photoelastic Bench (Polariscope) by Leech (Rochester) Ltd, UK, incorporating alternative mercury-vapour and tungsten light sources, complete with power unit for the mercury-vapour system, as used in the Structural Engineering Laboratory of Imperial College, London

Complete Jessop-Leech Photoelastic Bench (Polariscope) by Leech (Rochester) Ltd

1962

Elbow projection polariscope, with six large slides, kaleidoscope slide and accessory slide holder with five slides, by Newton & Co., Fleet Street, London, England, 1890-1900

Elbow projection polariscope, with accessories

1890-1900

Two Immersion Tanks for Photoelastic Examination of Frozen Stress Specimens in a Polariscope, manufacturer unknown, one with viewing window broken, used in the Structural Engineering Laboratory of Imperial College, London

Two Immersion Tanks for Photoelastic Examination of Frozen Stress Specimens in a Polariscope

1960

Polariscope by Horne and Thornthwaite, in case

Polariscope by Horne and Thornthwaite, in case

Arago polariscope

Arago polariscope

Early polariscope to show the rings in axis-cut crystals, by William Cary, London, in red leather case, with book of instructions, c.1830.

Early polariscope to show the rings in axis-cut crystals, with case and instructions

1825-1835

Demonstration polariscope, rosewood and ivory frame and handle a with rotating mount containing six mineral crystals samples and oval red leather and wood case with velvet and silk lining, unsigned, British, 1830-1880. Once the property of Sylvanus P Thompson (1851-1916), professor of physics at the City and Guilds Technical College in Finsbury, England.

Demonstration polariscope with red leather case.

1830-1880