20 1 1 What's the secret of the magic in the Spring Festival Evening?

20 1 1 Spring Festival party magic: goldfish phalanx decryption

Positive reaction of fish: remote control of live fish with electricity.

In a certain DC electric field, the fish will turn to the anode and swim to the anode. Even if the current direction is changed, the fish will turn to the anode. In an alternating current field, the fish will stagnate.

This directional induction response of fish to electrical stimulation is called positive response, and the minimum or critical voltage corresponding to the positive response of fish is called positive voltage.

The induced voltage of fish with head facing the sun is 1.5-2.0 times that of fish with tail facing the sun.

Stimulate the fish with the middle value of the induced voltage at the head and tail: when the fish head is facing the anode, the fish has no induction reaction, but when the fish tail is facing the anode, the fish will have induction reaction. This is the reason why fish move to the anode in the electric field (that is, positive reaction), which is an instinctive reaction of fish to alleviate the pain caused by electric shock.

Big fish are sensitive to low-frequency pulse current, and small fish can produce the same positive reaction only when the pulse frequency is slightly higher.

When fish are stimulated by high-frequency pulse current, they often can't get effective positive response. Generally, the most suitable pulse current frequency for fish to produce positive reaction is about 40 Hz.

The positive pulse frequency of anchovy sardines is 25-45 Hz; 25-45 Hz for minnows; Japanese anchovy 25-45hz；; Jellyfish is 35 Hz; Flounder 20-40 Hz; Carp 45-50 Hz

When the fish is stimulated by pulse current with fast rising and slow falling waveforms, the fish will have a positive reaction immediately. The faster the current increases, the lower the voltage for the fish to produce a positive reaction.

When the fish is stimulated by the pulse current with slow increase and rapid decrease in waveform, the fish's nerves adapt to the current when the current slowly increases, so the phenomenon that electrical stimulation does not work appears.

According to the response effect of fish to the change of pulse current waveform, pulse deformation with rapid increase of current and slow decrease of current is generally adopted.

The greater the intensity of electrical stimulation to fish, the shorter the discharge time. Usually, the pulse period of fish electrotherapy is controlled within 2 milliseconds.

The pulse time of freshwater fishing is1.5-3 ms; The pulse time for expelling fish schools is 0.5- 1 millisecond.

20 1 1 Spring Festival Evening Magic: Tearing the newspaper by hand to decrypt it.

Prepare two newspapers in advance. A folded spring clip was hidden at the waist and was blocked by the coat. The audience didn't know. Show a newspaper to the audience, then tear it into several pieces along the middle line and stack it together, the size of which should be the same as that of the newspaper hidden in advance, so that the magician can spread it by changing it quickly.

When the magician tore the newspaper in half, there was half a newspaper in his left hand and half a newspaper in his right hand. The left hand was in front, and the right hand conveniently took out the folded newspaper under the cover of half a newspaper to continue tearing. After tearing into the same size, he put the good newspaper in front and opened it. At this time, under the cover of a good newspaper, he put the broken newspaper back in the spring clip at his waist.

The fish in the picture enters the fish tank.

That photo frame is too thick; There are goldfish hidden inside; Behind the fake fish is the real fish; There is a flip in the middle. The third riddle should be in that box, too. The fish in the picture is moving; The fish in the back was pushed. Fish enter the fish tank from the top of the fish tank; Because the photo frame is blocked, the water level of the fish tank is high; So when the fish entered the water, the audience didn't see or hear the splash.

20 1 1 Spring Festival party magic: people wear mirrors to decrypt.

This is purely a prop, wearing a mirror is old-fashioned, and American magician Angel has also played this trick. This is not unbelievable. The problem lies in the combination of the mirror and the backplane. The back shot is the photographer's back view of the mirror, not the side mirror, and he wears another mirror when he wears it! There is a dark passage in the middle of the other mirror. Didn't you see the photographer look behind and turn the camera to the front to wear it last? It's over. That's it.

David crossing the Great Wall is similar to this magic. Crossing the Great Wall, performed by American super magic master Copperfield, is the crystallization of the wisdom of China people. Magicians can't achieve magical effects by drilling holes and digging walls, they can only use magic. Let me describe this magic performance, maybe you can understand a thing or two. The magician boarded the stage against the wall from the wooden ladder and was immediately surrounded by white cloth. When the light is on, the magician appears on the white cloth. At this time, the wooden ladder was quietly removed and hoisted to the other side of the Great Wall with a big crane. After the magician walked out of the Great Wall, the wooden ladder tilted upward and the magician came down from it. Notice why I describe the wooden ladder a lot. It turned out that the mechanism was on the wooden ladder, which was specially used to accommodate magicians. I won't say anything else, understand?