Moving coin. Effective trick and its solution

EFFECTIVE FOCUSES AND THEIR CLUES
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Moving coin. Focus secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

Focus Description:

The magician takes a fifteen-kopeck coin from his pocket and places it on the back of the outstretched fingers of his right hand. The attention of the audience naturally focuses on this coin - they are interested to know what will happen to it. And before the eyes of the audience, the coin crawled along the hand, like a living creature.

When the coin approached the edge of the thumb, the artist put his left hand to this hand, holding it in the same position, and the coin obediently passed to the left hand, continuing its movement. The audience is at a loss - how could the artist make the coin move along the hand?

Focus secret:

The secret and props of this trick are remarkably simple. The props consist of a fifteen kopeck coin and a nylon thread 25-30 cm long (the thread can be pulled out of a nylon stocking that has fallen into disrepair).

The secret of the focus lies in this thread. The performer attaches one end of the thread to the left side of the lapel of the jacket just below the middle. The magician then takes a tiny piece of plasticine and rolls it into a tiny ball. This ball is attached to the second free end of the nylon thread. The end of the thread with the ball should be at the level of the buttonhole of the jacket (where the lapel ends; Fig. 1).

Focus Moving coin
Ris.1

The artist can now begin demonstrating the trick. With his right hand, he takes a coin out of his pocket, and with his left he feels for the ball at the end of the thread (Fig. 2).

Focus Moving coin
Ris.2

At the moment when the performer is about to put a coin on his hand, he quickly and carefully sticks this ball to the coin. Then the artist places the coin on the back of the outstretched fingers of the right hand so that the ball is at the bottom, under the coin (Fig. 3). Thus, the coin turns out to be attached to a thread invisible to the viewer (kapron thread is extremely thin and completely invisible on the human body; the artist uses this quality of nylon thread).

Focus Moving coin
Ris.3

Having put the coin on his hand, the performer carefully begins to move this hand forward, and the coin attached to the thread remains in place. This gives the viewer the impression that the coin is moving. As soon as the coin is on the edge of the thumb, the performer puts the edges of the fingers of the left hand to the right hand, carefully transferring the "moving" coin to it (Fig. 4). Alternately, the magician transfers the coin to one or the other hand.

Focus Moving coin
Ris.4

While the coin moves along one hand, the performer holds the other over it, creating the appearance that this hand has a magical effect. In fact, the function of the free hand is to cover from the audience a thread that can be seen against the background of the jacket.

So that the audience does not have a suspicion that the coin is secret, the artist can repeat this trick by taking the coin from one of the audience. After demonstrating the trick, the performer, imperceptibly unsticking the coin from the plasticine, gives it to the audience for inspection.

Author: Akopyan A.A.

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Nitroglycerin May Cause Migraines and Abnormal Cardiovascular Reactions 18.12.2019

In addition to the recognized migraine-provoking effects of nitroglycerin, a study reports abnormal cardiovascular regulation of this compound in patients with migraine.

Nitroglycerin is a potent vasodilator and is known to cause migraine attacks in migraine patients. Due to its vasodilating properties, nitroglycerin is used in cardiovascular studies to test for cardiovascular changes in blood pressure measurements secondary to venous pooling. For example, nitroglycerin is used to test baroreflex function in individuals with vasovagal syncope, which is common in migraine patients.

Scientists at the Leiden University Medical Center assessed cardiovascular parameters using photoplethysmography (blood pressure, heart rate, stroke volume, cardiac output, peripheral resistance) before (-10 min), during intravenous nitroglycerin administration (20 min) and after nitroglycerin administration (10 min.) They compared the differences between migraine patients who had nitroglycerin-induced attacks and healthy controls. The presence of vasovagal syncope was also taken into account.

Ten healthy participants and 16 patients with migraine were included in the study. Thirteen of 16 patients (81,3%) had migraine attacks after nitroglycerin infusion, versus none in the control group. Vasovagal syncope was not provoked. Patients with migraine showed a higher heart rate in response to nitroglycerin infusion. In a subgroup analysis of patients with migraine divided into patients with early attacks (those who had attacks <270 minutes after NTG infusion) or late attacks (at >270 minutes), stroke volume and cardiac output were reduced in both cases within migraine group compared to the healthy control group, with a more pronounced reduction in the early-onset migraine group.

The authors interpret these data with caution as the study was underpowered with a small sample size. Dr. van Oosterhout said, "The increased systemic circulatory response to nitroglycerin in migraine suggests that the systemic vasculature is more susceptible to its (vasodilating) effects." And adds: "Sensitivity to nitric oxide (NO) may be increased, possibly due to higher perivascular concentrations of NO synthase." Finally, although none of the participants had vasovagal syncope, the authors do not rule out a common susceptibility to migraine attacks and vasovagal syncope, as some patients in this study also experienced vasovagal syncope in life.

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