Question

Which of the following is not a graphic aid?

• A. Epidiascope
• B. Chart
• C. Map
• D. Graph

Answer 1

Answer:

A. Epidiascope

• An epidiascope is an optical device used in the late 19th and early 20th centuries, primarily for projecting images, such as photographs or drawings, onto a screen.

• It could project both opaque materials (like photographs or documents) and transparent materials (like slides).

• It was an important predecessor to modern projectors and was commonly used in educational and entertainment settings.