Question

Which principle is made use of in motion picture projection in cinematography.?

Answer 1

A movie projector is a device that continuously moves film along a path so that each frame of the film is stopped for a fraction of a second in front of a light source. The light source provides extremely bright illumination that casts the image on the filmthrough a lens onto a screen.

Answer 2

The principle that is used is:

When an image moves at a speed of 1/16 th of a second our eyes view the next image as a continuance of the last image

Our brain cannot perceive that the last image was actually moving

This is termed as persistence of vision.

Hope this helps you:-)

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