General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

glass hologram/ aluminum frame/ cardboard backing

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

40.6 cm

Width

30.5 cm

Height

N/A

Thickness

1.2 cm

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Physics

Category

Light & electromagnetic radiation

Sub-Category

N/A

Manufacturer

AKA

Laser

Country

Sweden

State/Province

Unknown

City

Stockholm

Context

Country

Canada

State/Province

Ontario

Period

late 1980s

Canada

Swedish made hologram collected for the exhibit "Images in Time & Space" mounted by the Associates of Science & Technology (AST) & the National Museum of Science & Technology (of Canada) circa 1988-1989.

Function

A medium which presents a three dimensional image, in this case a portrait of Emmett Leith, a pioneering holographer.

Technical

An example of a reflection type hologram, designed to be lit from the front to reveal the image. This was made using a ruby krypton laser. It is a portrait of Emmett Leith of the University of Michigan, who with Juris Upatnieks in 1962 developed the off-axis technique of hologram production still in use & the first laser transmission hologram (Ref. 1). The theory of holography was developed in 1947 by British/Hungarian scientist Dr. Dennis Gabor while working to improve the resolution of electron microscopes. In 1960 the laser was invented and its pure white light was ideal for holography. In 1962 Leith and Upatnieks combined Gabor's theory with their own work in side-reading radar and applied it to holography, resulting in the off-axis technique & the first laser transmission hologram. Also in 1962 Dr. Yuri N. Denisyuk of the U.S.S.R combined holography with Gabriel Lippmann's work in natural colour photography to produce a white-light reflection hologram which, for the first time, could be viewed in light from an ordinary incandescent light bulb. By 1965 Leith, Upatnieks & other U.S. researchers had developed off-axis reflection holograms (Ref. 1)

Area Notes

Unknown

Details

Markings

label on back reads "LASERGRUPPEN/ HOLOVISION AB/ Osthammarsgatan/ S-115 28 STOCKHOLM/ [telephone] 08-63 99 08"

Missing

appears complete

Finish

dark glass/ silver coloured frame/ white cardboard

Decoration

N/A