Free technical library
Remove and put up. Focus Secret
Directory / Spectacular tricks and their clues
Comments on the article
Focus Description:
A triangle is made from three matches. Invite the viewer to remove two matches and substitute one to form a triangle again. Of course, such a task will baffle anyone.
Focus secret:
Without destroying the relative position of any two matches, “remove” them, that is, move them to the side. Place the remaining one match in its original place.
Author: Kuptsova O.
We recommend interesting articles Section Spectacular tricks and their clues:
▪ The mysterious disappearance of an egg in a sack
▪ Tricks with paper
▪ Coin and piece of paper
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:
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 ... >>
The threat of space debris to the Earth's magnetic field
01.05.2024
More and more often we hear about an increase in the amount of space debris surrounding our planet. However, it is not only active satellites and spacecraft that contribute to this problem, but also debris from old missions. The growing number of satellites launched by companies like SpaceX creates not only opportunities for the development of the Internet, but also serious threats to space security. Experts are now turning their attention to the potential implications for the Earth's magnetic field. Dr. Jonathan McDowell of the Harvard-Smithsonian Center for Astrophysics emphasizes that companies are rapidly deploying satellite constellations, and the number of satellites could grow to 100 in the next decade. The rapid development of these cosmic armadas of satellites can lead to contamination of the Earth's plasma environment with dangerous debris and a threat to the stability of the magnetosphere. Metal debris from used rockets can disrupt the ionosphere and magnetosphere. Both of these systems play a key role in protecting the atmosphere and maintaining ... >>
Solidification of bulk substances
30.04.2024
There are quite a few mysteries in the world of science, and one of them is the strange behavior of bulk materials. They may behave like a solid but suddenly turn into a flowing liquid. This phenomenon has attracted the attention of many researchers, and we may finally be getting closer to solving this mystery. Imagine sand in an hourglass. It usually flows freely, but in some cases its particles begin to get stuck, turning from a liquid to a solid. This transition has important implications for many areas, from drug production to construction. Researchers from the USA have attempted to describe this phenomenon and come closer to understanding it. In the study, the scientists conducted simulations in the laboratory using data from bags of polystyrene beads. They found that the vibrations within these sets had specific frequencies, meaning that only certain types of vibrations could travel through the material. Received ... >>
Random news from the Archive Identification of Internet users by fingerprints
23.09.2000
Sony has announced the creation of a reliable and convenient Internet user identification technology. The new FIU-700 integrates a capacitive fingerprint scanner and a public key code generator.
Although the use of fingerprints is not new in identification technology, the device contains a fundamentally new identification scheme, since the comparison of biometric data and pre-entered fingerprints occurs directly in the device, and therefore the entered parameters do not enter the external network (they do not even enter the computer ).
The mass of the device connected via the USB port is only 35 g, dimensions are 85x54x9 mm.
|
Other interesting news:
▪ Floating atoms to measure gravity
▪ Plasma accelerator for plants
▪ Ecological medicines from waste paper industry
▪ Homework and academic performance
▪ Large-scale testing of the Einstein-Podolsky-Rosen paradox
News feed of science and technology, new electronics
Interesting materials of the Free Technical Library:
▪ section of the site Encyclopedia of radio electronics and electrical engineering. Article selection
▪ article Children's infectious diseases. Lecture notes
▪ article Where do huge stones serve as money? Detailed answer
▪ article Pinworm prostrate. Legends, cultivation, methods of application
▪ article Soap powders, pastes and compositions for washing hands after work. Simple recipes and tips
▪ article CD-ROM drive as an audio CD player. 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
www.diagram.com.ua
2000-2024