8 oct. 1950 - OHP Projector
Description:
An overhead projector, like a film or slide projector, uses light to project an enlarged image on a screen. In the overhead projector, the source of the image is a page-sized sheet of transparent plastic film with the image to be projected either printed or hand-written/drawnAjouté au bande de temps:
Date:
8 oct. 1950
Maintenaint
~ Il y a 75 ans