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jan 1, 1960 - Overhead Projector

Description:

Overhead projector is a presentation device that projects the enlarged image of writing or drawing on clear or transparent film placed on it onto a wall or screen by means of an overhead mirror. It is a variant of slide projector that is used to display images to an audience.

Added to timeline:

5 Dec 2018
0
0
420

Date:

jan 1, 1960
Now
~ 65 years ago

Images: