Transit of Venus Slides

Astronomy

Accession Number: 2012.ast.14

Description:

Stack of 18 slides held together with 2 rubber bands. 3 slides photographic film bound in cardboard, 15 others printed on glass bound with aluminium. Slide content appears to be for a lecture on the Transit of Venus.

Alternative Name: lecture slides

Primary Materials:

Aluminium, glass, photographic film, cardboard.

Markings:

1) Loose label: “Transits of Venus.” Slides are individually numbered and some have descriptions of the slide content.

2) On aluminium slides: “Perrocolor, US Pat. 2916840, Made in Switzerland.”

3) On cardboard slides: “Oberon colour slide, A Woodmansterne Production. Copyright. Reproduced by courtesy of the Trustees of National Maritime Museum, Greenwich. Woodmansterne Ltd. Watford.”

Dimensions (cm):

Individual slide: Height = 0.2 x Width = 4.8 x Length = 4.8. Whole stack: Height = 4.4 x Width = 4.84.8 x Length =4.8

Function:

Visual aid for lecture on the Transit of Venus.

Condition: Excellent

Associated Instruments:

Manufacturer:

Aluminium slides: probably homemade using materials from Perrocolor. Cardboard slides: Woodmansterne Ltd. Watford.

Date of Manufacture: c. 1970

Provenance:

University of Toronto Department of Astronomy and Astrophysics

Donated to UTSIC: No

Historical Notes: