About movies

The principle of water curtain movies and stereoscopic movies is the same as that of ordinary movies, both of which are projections.

The difference is that the water curtain film uses the water wall as the imaging screen.

Stereoscopic movies are polarized movies, and viewers need to wear stereoscopic glasses, that is, polarizers. Different images with different polarization directions on the left and right reach different eyes to produce stereoscopic effects.