Renseignements généraux

Nº de série

S/O

Nº de partie

1

Nombre total de parties

1

Ou

S/O

Brevets

S/O

Description générale

glass hologram/ aluminum frame/ cardboard backing

Dimensions

Remarque : Cette information reflète la taille générale pour l’entreposage et ne représente pas nécessairement les véritables dimensions de l’objet.

Longueur

40,6 cm

Largeur

30,5 cm

Hauteur

S/O

Épaisseur

1,2 cm

Poids

S/O

Diamètre

S/O

Volume

S/O

Lexique

Groupe

Physique

Catégorie

Lumière et radiation électromagnétique

Sous-catégorie

S/O

Fabricant

Ou

Laser

Pays

Sweden

État/province

Inconnu

Ville

Stockholm

Contexte

Pays

Canada

État/province

Ontario

Période

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.

Fonction

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

Technique

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)

Notes sur la région

Inconnu

Détails

Marques

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

Manque

appears complete

Fini

dark glass/ silver coloured frame/ white cardboard

Décoration

S/O