Mathematical disappearance of matches. Effective trick and its solution

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

Mathematical disappearance of matches. Focus secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

Focus Description:

Lay three triangles on a table of matches. Ask the viewer to rearrange only two matches so that there are no triangles. The viewer gets nothing.

Focus secret:

Focus Mathematical Disappearance of Matches

Take two matches from the middle triangle and make an "equal" sign on the right, explaining that the result is an arithmetic operation: a triangle minus a triangle is equal to zero, which means there are no more triangles.

Author: Kuptsova O.

We recommend interesting articles Section Spectacular tricks and their clues:

▪ Just one chance

▪ The mysterious disappearance of the handkerchief

▪ The appearance of flowers on an empty plate

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

Quectel L96-M33 miniature multi-system GNSS module with patch antenna 09.01.2020

The new Quectel L96-M33 module is capable of working with the signals of four satellite constellations: GPS L1 1575.42MHz C/A Code, GLONASS, BeiDou and Galileo, which improves the quality of positioning in urban environments. Thanks to a miniature chip antenna, the module can be successfully used in wearable equipment, where the dimensions of the device are a determining factor.

L96-M33 has improved efficiency when receiving weak signals and high sensitivity: -165 dBm in tracking mode and -148 dBm in capture mode. It is possible to connect an external antenna.

The receiver uses a built-in auxiliary system to quickly determine the position of AGPS EASY. This technology reduces the time to first detection (TTFF). Additionally, the module stores data on the movement of satellites in its memory and, based on them, makes predictions for up to 3 days, which allows the module to quickly determine the location in low-power conditions.

AlwaysLocate technology allows you to adjust the on / off time and strike a balance between positioning accuracy and power consumption.

To control the module, you can use the UART and I2C interfaces (NMEA 0183 and PMTK protocols). The supply voltage of the L96-M33 is in the range from 2,8 to 4,3 V. The current consumption is 20 mA in tracking mode and 25 mA in search mode (GPS + GLONASS). In power-saving AlwaysLocate mode, consumption is reduced to 2,8 mA. Operating temperature range -40...85°C.

Other interesting news:

▪ Gmail mobile

▪ The benefits of sex for athletes

▪ Genes responsible for photosynthesis can increase crop yields

▪ Stop sign at the back of the head

▪ The phone is controlled by sight

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ Telephony site section. Article selection

▪ article Rotten liberalism. Popular expression

▪ article What is the speed of thought? Detailed answer

▪ article Packer of goods. Standard instruction on labor protection

▪ article Advantages and features of wind turbines. Encyclopedia of radio electronics and electrical engineering

▪ article Rings and three swords. Focus secret

Leave your comment on this article:

All languages of this page

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