Menu English Ukrainian russian Home

Free technical library for hobbyists and professionals Free technical library


EFFECTIVE FOCUSES AND THEIR CLUES
Free library / Directory / Spectacular tricks and their clues

Match through the bow of a pin. Focus secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

Comments on the article Comments on the article

Focus Description:

Poke a pin through the middle of a match without a head, move the match to the middle of the bow and fasten the pin. Holding the pin in your left hand, with the index finger of your right hand, sharply pull one end of the match toward you, as if you want to pass it through the adjacent bow of the pin. When the match hits the metal, your finger should slip off the match. It will seem to the audience that the match really went through the shackle.

Focus secret:

When it hits the metal, the end of the match bounces off the bow, describes a semicircle and turns out to be on the other side. The eye does not have time to follow its movement, and there is a complete illusion of penetration of the match through the bow.

 We recommend interesting articles Section Spectacular tricks and their clues:

▪ The card is called before being removed from the deck

▪ recoloring flowers

▪ breeding ball

See other articles Section Spectacular tricks and their clues.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Machine for thinning flowers in gardens 02.05.2024

In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers. ... >>

Advanced Infrared Microscope 02.05.2024

Microscopes play an important role in scientific research, allowing scientists to delve into structures and processes invisible to the eye. However, various microscopy methods have their limitations, and among them was the limitation of resolution when using the infrared range. But the latest achievements of Japanese researchers from the University of Tokyo open up new prospects for studying the microworld. Scientists from the University of Tokyo have unveiled a new microscope that will revolutionize the capabilities of infrared microscopy. This advanced instrument allows you to see the internal structures of living bacteria with amazing clarity on the nanometer scale. Typically, mid-infrared microscopes are limited by low resolution, but the latest development from Japanese researchers overcomes these limitations. According to scientists, the developed microscope allows creating images with a resolution of up to 120 nanometers, which is 30 times higher than the resolution of traditional microscopes. ... >>

Air trap for insects 01.05.2024

Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>

Random news from the Archive

Dogs rely on others 03.10.2015

Dogs are much friendlier than wolves, including towards humans. Wolves have great difficulty understanding human gestures, do not like to make eye contact and do not run after a thrown stick (they can be taught to play, but again with much more difficulty than dogs). Usually high sociality, the ability to establish and maintain contact with another is considered a sign of high intellectual development, so the conclusion that sociable dogs are smarter than their fearsome wild relatives suggests itself.

Experiments seem to confirm this: if a dog and a wolf are faced with an unsolvable task - for example, if they need to open a container of food, but it does not open in any way - then the dog, after a little fiddling, will run to ask for help from the owner, while the wolf will continue to try to overcome the insurmountable . In other words, the dog can adequately assess the task, but the wolf cannot.

But if you change the conditions of the experiment: let the task be quite easy for yourself - how will the wolves and dogs behave? Monique Udell of Oregon State University did just that: 10 dogs and 10 wolves (who grew up next to humans) had to get a piece of sausage from a box that was fairly easy to open by pulling on a string. Shelter dogs were also taken into the experiment, which served as a "middle point" between socialized domestic dogs and wolves.

In one case, the animal was left alone with the box, in the other, a person was also nearby; 2 minutes were given to get a treat. The wolves, left alone, guessed how to open the box in 8 out of 10 cases. Of the ten shelter dogs, only one solved the problem, and none of the domestic dogs could get to the treat. Almost the same thing happened when a person was standing nearby, with one exception - one of the domestic dogs was still able to open the container herself. But on the other hand, all the dogs, as usual, looked at the person for a long time, while the wolves devoted more time to solving the problem on their own.

In the second part of the experiment, those dogs were taken who could not get the sausage. This time, the man was not just standing next to them, but gesticulating and talking to the animals, encouraging the dogs to keep trying. The social stimulus worked well for the shelter dogs, four of which were able to take the treat, and as for the house dogs, only one of them opened the box again. However, when prompted by a person, the dogs spent more time trying to cope with the task. Here it must be emphasized once again that the task was very simple, and the dogs could solve it, but they preferred to wait for help from outside.

It turns out that wolves and dogs use different strategies of behavior: the former rely on their own strength, while the latter rely on, shall we say, social connections, even if such behavior turns out to be useless in the end. Only when the social partner, that is, the person, confirms that what needs to be done must be done, the dogs still make some independent efforts. The reason for this probably lies in the peculiarities of the upbringing of dogs, which are constantly told what not to do, so they get used to waiting for instructions rather than taking the initiative. In addition, domestic dogs have been living in greenhouse conditions side by side with people for thousands of years and are already accustomed to the fact that the owner will come to the rescue in case of emergency.

However, it does not follow from this that wolves are smarter than dogs, just that both use different "forms of the mind." Dogs rely on a social tool when you ask for help and use not your own paws and teeth, but someone else's hands. The wolves have nowhere to wait for help, so they have to manage on their own. On the other hand, here we should not forget that the motivation for both can be different: wolves are more motivated than dogs by food, which can explain the wolf's diligence in getting the sausage out of the box.

Other interesting news:

▪ coffee burns fat

▪ 6-inch 720p smartphone Lava Magnum X604

▪ Can pinch bacteria

▪ Islands don't want to sink

▪ Gas and oil from old tires

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ section of the site For a beginner radio amateur. Article selection

▪ article To equate a pen to a bayonet. Popular expression

▪ article Where did the Martian channels disappear? Detailed answer

▪ article Hazard identification

▪ article Coloring a tree. Simple recipes and tips

▪ Rehearsal article. Focus Secret

Leave your comment on this article:

Name:


Email (optional):


A comment:





All languages ​​of this page

Home page | Library | Articles | Website map | Site Reviews

www.diagram.com.ua

www.diagram.com.ua
2000-2024