What is the magic principle of stopping rain in One Pirate 2?

I think it should be guaranteed from two aspects (the video is below), one is visible to the naked eye, and the other is visible after shooting. The former is difficult to complete, and may be guaranteed by water drops with special frequency and flash with special frequency. There should be two groups of lighting effects (to ensure that people will not feel too stiff when they see water droplets). One group is dark and stays bright, and the other group has the same flashing frequency as water droplets. The flicker frequency of water droplets is slightly faster than that of water droplets wherever they go. For things that move up and down (in movies), the actual effect that is so shocking and clear in nature movies should be animation. The second one is very simple, and it can be kept at home, but it is invisible to the naked eye. I did it according to the response of the pig above, and it was a video of miles and miles.

First of all, you have to have a speaker, and fix the water pipe on the speaker, preferably a thinner pipe. Then you have to have a mobile phone, download an audio generator, adjust it to 24Hz, connect the speaker, turn on the water, and turn on the speaker pat, and you can get the actual effect that the water drops are still.

At first, I shot it with HTC m8 iphone6 pro6, with 24 frames per second, which was not good, because the speed of the SLR shutter was too slow to adjust. Then change the camera to shoot, and there will be practical results. In fact, in M file, video shooting, focal length adjustment is bigger, shutter speed 1/320, frame number 24FPS. You can also adjust the shutter speed naturally and quickly. In order to better provide sufficient light, two photographic lamps (natural light is also acceptable) are also used. When the frequency of running water is adjusted to 23Hz or slowed down, water drops seem to be coming to celebrities, but the whole process of this way is not practical to the naked eye.

The basic principles of magicians Before interpreting the basic principles of magicians, let's first understand two basic principles related to human visual effects. There are three necessary conditions for people to see small raindrops, 1 and a normal eye. 2. A small raindrop that has nothing to do; 3. Visible light source. Only by these three standards can people's eyes see small raindrops. The imaging principle is that the light source emitted by the lamp shines on the small raindrop, and the small raindrop feeds back the opinions of the light source to people's eyes according to the reflective surface and its diffuse reflection light, thus producing the visual effect of the small raindrop and making people see the small raindrop.

Well, after understanding the principle of human eye imaging, let's talk about mastering an object, which is called visual persistence effect. What is this effect? It means that when people's eyes observe the scenery, the light signal lamp does not shine, and it takes a short time to spread to the brain nerve. After the lighting effect was finished, the brand image of visual effect did not fade immediately. This residual visual effect is called "afterimage", and this visual effect is called "visual persistence". To tell the truth, if you see an object, it suddenly disappears, and the portrait it produces on your macula will stay for 0. 1-0.4 seconds, and then fade away. For a simple example, you can stare at the bright red part of the picture below for 30 seconds, then close your eyes or stare at other areas, and you can see the women's gallery on the picture. This is the effect of visual persistence.

To sum up, we can see in the movie that the surrounding lighting effect is flashing at a certain frequency, and the precipitation is irradiated here according to the tap water pipe on the roof. The practical effect of the accumulation of the two will cause the illusion that small raindrops float. If we speed up or slow down the flashing frequency of the lighting effect, we can complete the illusion that small raindrops rise or fall slowly in mid-air. This illusion of small raindrops fluttering is often seen in our daily life. For example, when the wheel rotates to a certain frequency, it will rotate in the opposite direction, which is caused by the retention of visual effect and the frequency of human eyes. Well, today's interpretation of the basic principles of magicians is here. This fungus is going to sleep! I don't know how to find a textbook for my own scientific research ~ Finally, Amway, the series of products of "Amazing Thieves" are really beautiful! ! ! ! !