Miracle table. Effective trick and its solution

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

Miracle table. Focus secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

Focus Description:

Show the scarf on both sides. Get them a table. Grasp the middle of the scarf with your hand. Raise it up slowly. Look! Together with the scarf, the table also rises.

Focus Miracle Table

Focus secret:

This trick is not difficult, but requires special tools. The figure shows that there is a strong thread in the table leg. It passes into a thin hole in the center of the lid. At the lower end of the thread, at the base of the leg, hangs a small weight. The top end is secured with a small transparent button. The length of the thread is calculated in advance.

Raising the handkerchief up, you need to grab the button lying on the table. And if you now release the handkerchief, the thread itself will enter the table leg under the weight of the load and it will not be noticeable when you remove the handkerchief from the table.

Author: V.Postolaty

We recommend interesting articles Section Spectacular tricks and their clues:

▪ magic whistle

▪ finger through ear

▪ Fakir's magic wand

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

The secret of the strength of ancient Roman concrete 09.07.2017

Marie D. Jackson from the University of Utah, USA, and her colleagues from various American, Italian and Chinese scientific institutions have found the answer to the question why modern concrete, used everywhere, from roads to buildings to bridges, can fail in just 50 years, but thousands of years after the Roman Empire collapsed, its concrete structures are still standing. It turned out that the matter was in a special ingredient, which over time makes the material stronger, not weaker.

The scientists began their search with an ancient solution recipe, described by the Roman engineer Marcus Vitruvius in 30 BC. His instruction is to make a mixture of volcanic ash, lime and sea water, add crushed volcanic rocks to it and place it in a wooden mold, which should then be immersed again in sea water.

There are many references in history to the durability of Roman concrete, including a cryptic note written in 79 BC describing concrete exposed to seawater as "a single mass of stone, impregnable by the waves and growing stronger every day." What does it mean?

To find out, the researchers studied pits made in an ancient Roman harbor in the Gulf of Pozzuoli near Naples, Italy. When they analyzed the resulting material, it turned out that the seawater had dissolved components of the volcanic ash, allowing new binding minerals to form. Within a decade, a very rare hydrothermal mineral known as aluminium-tobermorite formed in the concrete. The very fact that it gives strength to concrete has long been known, it can be obtained in the laboratory - and it is very difficult to incorporate it into concrete.

The researchers found that when seawater percolates through the cement matrix, it reacts with volcanic ash and crystals to form Al-tobermorite and a porous mineral called phillipsite.

However, it is unlikely that humanity will receive more durable piers and breakwaters in the near future, because both of these minerals have been formed for centuries to strengthen concrete. So modern scientists will have to develop a technology for the production of a modern version of ancient Roman cement.

Other interesting news:

▪ High-precision optical probe for studying the human brain

▪ The female brain changes every month

▪ By typing text, we give out our emotions

▪ Miracle laptop with 6,8 GHz processor 1 TB RAM

▪ The main reason for the love of alcohol discovered

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Funny puzzles. Article selection

▪ article Elizabeth I. Famous aphorisms

▪ article Which football club is named after two chemicals, one of which is poison? Detailed answer

▪ Sedan article. Legends, cultivation, methods of application

▪ article Automatic pump shutdown. Encyclopedia of radio electronics and electrical engineering

▪ article Indicator for connecting electrical appliances to a 220 V network. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

All languages of this page

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