In the morning, after the breakfast prepared by Shirley, Harvey went out to visit Kenneth Randolph, the special effects artist of Brenda theatre company and the medium caster of magic. Brenda theatre company is a well-known theatre company touring all over the country. It will only stay in each city for a few months and hold a theatrical performance every half a month. In this era of lack of entertainment, drama is a high-quality spiritual pastime, so there are no empty seats for each performance.

Although Harvey has become a hot figure in Elroy, few people can recognize him when walking on the street. Most people who have seen count of Monte Cristo probably only know the author's name is Harvey Adrian.

When he comes to Kenneth's prophouse, Harvey explains his intention. First, he hopes to buy more magic crystals. Second, he asks about other functions of magic crystals.

The props room of Brenda theater company is full of all kinds of props used by the theater company, including some scene props, wigs and costumes. The whole room is crowded and dark.

Kenneth crowded in the room to stir up his magic crystal. After hearing Harvey's intention, he didn't understand why Harvey asked such a question. He stopped his research and thought about it, and said, "Mr. Adrian, I do have some spare magic crystals in my hand, which can be sold to you at an appropriate price. Your other question is whether the magic crystal can store plane images. This question is for sure, but plane images have no stereo sense and visual effect, and can only be used in a few areas. What do you want to do with those magic crystals? "

After listening to Kenneth's words, Harvey was relieved and explained with a smile: "after making an interesting tool and studying the magic crystal, I always have a question in my heart, that is, whether I can store an image in the form of a plane image." Now that there is a magic crystal with similar function, he will save his research effort.

Kenneth seemed to understand Harvey's plan. He said with some humor, "Mr. Adrian, you should know that the recorded plane image is not dynamic. The effect of a plane image is far less than that of seeing or projecting with one's own eyes. I've also used a magic crystal to record a scene. It's a pity that both the static effect and the dynamic level are far inferior to projection. "

"Can't a still image make a coherent picture?"

Kenneth took it for granted: "of course, how can static flat images be coherent."

Harvey realized that the method of recording projection by magic crystal is always coherent, and there is no so-called frame number. Therefore, in the eyes of magic artists, plane images are just static pictures, and there is no such thing as coherent to form dynamic images. It's not that no one has ever discovered this, but because the magic crystal projection function makes most casters think that the projection function is the mainstream, and the recording plane image can only be used in some information recording fields.

Watching too far and ignoring the current status of the film in this world is quite embarrassing.

Harvey said dumbly, "Mr. Randolph, do you know the magic disk?"

Kenneth stroked his beard, and his old face showed obvious doubts. He had studied magic for so many years, but he had never heard what magic disk was. Hearing the name, he must have something to do with magic. Then he shook his head and asked, "I have never heard of this name."

In fact, magic disc has nothing to do with magic. It is the name of a simple and interesting device on earth. It can create wrong visual effects. It is known as the earliest demonstration of film principles.

Harvey gave a mysterious smile: "now I can make one for you. Can I use the props here?"

"Yes."

Harvey found a wooden round board representing the sun from the set props and drew a bird and a birdcage on the front and back of the board. Harvey showed Kenneth the magic disc he had made. He looked at two different patterns and still didn't understand: "Mr. Adrian, is this a magic disc? What's the mystery? "

"Not now. It's just a bird on this side. It's a birdcage on this side." Harvey chants the magic of "tiny miracle". The round board in his hand immediately floats. His right hand presses on the edge of the round board and turns it down. The whole round board turns quickly.

Kenneth's naked eye can see the pattern of bird and birdcage overlapped in the circular plate, eventually forming the pattern of bird trapped in the birdcage.

"This is the magic disc, as you can see why two unrelated patterns are combined. The reason is very simple. Even if the pattern is static, when it flashes at a certain speed, our eyes will recognize it as dynamic. "

"It does look like that, but what does it have to do with flat images?" Kenneth frowned and couldn't understand Harvey's vague explanation.

Harvey was helpless: "well, can you give me a book?"

Harvey did what he used to do in textbooks when he was a child. He drew a match man in the lower right corner of the page. Then he showed the book to Kenneth and explained carefully, "Mr. Kenneth, do you think these patterns are still?"

"It's true."

Harvey twists some of the pages, and as he gradually releases them, the matches drawn on different pages start to run quickly, forming a coherent movement.

Seeing this scene, Kenneth was surprised and said, "I see. I get it. It seems to be a feasible way."

The magic disk and the match man running just shown by Harvey are the basic principles of film making. The film is known as the most beautiful mistake of people's eyes. It is precisely because of the visual error that people can see the works presented in the form of film. There are still many controversies about the basic principles of film. There are two most common concepts.

The first is movement like phenomenon. When people see a fast flashing coherent picture, objectively speaking, the picture is not enough to form a coherent picture, but the human brain automatically fills in what is lacking in it.

The second is visual residue, that is, the human eye can see the image for a very short time, about a quarter of a second. According to this principle, most movies are 24 frames, that is, 24 pictures appear in a second to form a coherent image.

Kenneth was surprised by Harvey's strange idea, but he didn't seem to have any other views on it. In this world where projection technology exists, movies without practical results are empty talk in the final analysis. Before we really see them, probably everyone will think that it's better to make some projection realistic.

After all, the most shocking and complete effect of the world's popular drama can be shown by projection.

Noting Kenneth's disapproval, Harvey didn't intend to emphasize the role of this device after explaining the principle. He bought several magic crystals from Kenneth, one of which is a magic crystal with a plane image recording function. For the caster, it is used to record important picture information as a camera, It was originally used by Kenneth to collect information about horses. Now there are a lot of plane images of horses stored in this magic crystal.