Unknown

Physics · Unidentified

Accession Number: 2011.ph.556

Instrument Name: Unknown

Description:

Short brass cylindrical cap with hole through the centre, with rotating disc attached to its top surface. Disc rotates so that a series of holes decreasing in size successively pass over the central hole in the cap.

Alternative Name:

Primary Materials: Copper alloy

Markings: W-LADD LONDON

Dimensions (cm): 3x10x13

Function: For use in optical experiments.

Condition:

Good/Fair. Some scratches and spots of corrosion on the top of the cap surface and disc.

Associated Instruments: 2011.ph.557

Manufacturer: W. Ladd London

Date of Manufacture: Ca. Late 19th Century

Provenance:

University of Toronto Physics Department.

Donated to UTSIC: No

Historical Notes: