What is a water screen movie? What principle is it again?

Water curtain film technology is a multimedia technology that uses a beam of light shining on the water surface to display strong stereoscopic film effects. People who have watched water screen movies feel very shocked. Do you want to know what the principle of water screen movies is? 
What is a water screen movie 
Water curtain movies are created by using high-pressure water pumps and specially designed water curtain generators to spray water from bottom to top at high speed, atomize it into a fan-shaped "screen", and project a specially designed video tape onto the "screen" using a dedicated projector to create a water curtain movie. When the audience observes the movie, the fan-shaped water curtain blends seamlessly with the natural night sky. When the characters enter and exit the screen, it feels like they are soaring into the sky or descending from the sky, creating a sense of ethereal and dreamlike feeling that is enchanting. The water curtain movie projector consists of a mechanical device, a control bracket, a communication port, software, a time signal interface, and a DMX512 interface. The engine of this projector is controlled through optical sensing, with high precision. There are three control methods: programming control, direct control, and practical program control. The water curtain is over 20 meters high and 30-50 meters wide. Various VCD discs or water curtain specific films can be played on the water curtain, and the film and television effects are unique, novel, and serve as advertising tools. Water curtain films can be installed on various squares and wide water surfaces. 
Water curtains are usually over 20 meters high and 30-60 meters wide. When water curtain movies are played, the images have a strong sense of three dimensionality and space. The characters seem to soar into the sky or descend from the sky, blending with the natural night sky, creating a sense of ethereal and dreamlike atmosphere. Coupled with laser patterns, the scene becomes even more grand and majestic. Water screen movies are suitable for major festivals, large squares, and theme park venues. 
The advantages of water screen movies 
1. The screen is huge 
Generally, small water curtains have a length and width of nearly 10 meters and an area of about 100 square meters; The large lake water curtain can exceed 150 meters in length and 30 meters in height, and its nighttime viewing effect is even more vivid than the city's landmark buildings. This water curtain can also be adapted to local conditions, such as using local waterfalls and other facilities. The feature of a large water curtain is unparalleled by other technologies. 
2. Diverse forms 
There are relatively simple and useful pool planes, including rectangular vertical planes, irregular vertical planes, and 360 degree circular solids. In early 2011, a circular water curtain movie was officially released at Ocean Park in Hong Kong. 
3. Stunning visual impact 
Combined with ultra high power sound effects and unpredictable laser beams, the mirage like scenery allows nearby viewers to experience a mysterious and magical fairyland. 
4. Wide audience 
Not only can it be observed up close, but it can also be observed from a distance. Of course, the effect can vary greatly depending on the viewing position and angle, such as viewing from a lake, a nearby high-rise building, a distance, or aerial photography.