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

Who is older? Focus Secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

Comments on the article Comments on the article

Focus Description:

Tell two viewers that you can, without knowing their age, determine how much one is older than the other. Invite the youngest to subtract the number of his years from 99. And then let the elder add the number of his years to this difference and announce the result.

Focus secret:

To determine the difference in age, you need to subtract 100 from the resulting number and add one to the result.

For example, the age of the younger viewer is 9 years old, and the older one is 14. Subtract 9 from 99 and get 90; 90 plus 14 equals 104. Subtract 100 from 104 and add one. We get 5 - this will be the age difference.

 We recommend interesting articles Section Spectacular tricks and their clues:

▪ Of the two ropes - one

▪ Three tricks with coins

▪ Wine glass on a rope

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

Liquipel Skins coating will protect your phone from damage 24.08.2013

Liquipel is known for its special nano-coating that gives the device water resistance similar to IPx7 specifications. The company on its website offers both ready-made "processed" devices (smartphones, tablets, headphones and mp3 players), and can apply the coating directly to your device if it is on the corresponding list.

Now the company has announced the development of a new coating called Skins. The new technology is designed to protect your device from physical damage. Of course, this does not mean that you can now brag to your friends by allowing them to beat your smartphone with a hammer. But the company claims that falls from a small height will not leave noticeable marks on your electronic friend. The Liquipel Skins coating consists of four layers. The top layer is incredibly durable, according to the company, polyurethane. The second layer improves abrasion resistance, adds stiffness and prevents chipping at the corners.

In addition, the manufacturer focuses on the fact that the process of applying a new coating is extremely simple and does not require any additional tools from the user, and after application the surface remains perfectly smooth.

On the manufacturer's website, you can find offers for Apple iPhone (5, 4S, 4) and Samsung Galaxy S4 and S3 smartphones at a price of $15. Moreover, 14 color options are available.

Other interesting news:

▪ Created a laser with a 67-attosecond pulse

▪ Centenarians differ in intestinal microbes

▪ Acer ConceptD 7 SpatialLabs Edition XNUMXD laptop

▪ Internet by rope

▪ The computer mouse changes the way we see the world around us

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ section of the site Amateur Radio Technologies. Selection of articles

▪ article safety pin. History of invention and production

▪ What country is named after Christopher Columbus? Detailed answer

▪ article Mechanic of refrigeration units. Standard instruction on labor protection

▪ article Electronic call. Encyclopedia of radio electronics and electrical engineering

▪ article Voltage stabilizer, 11-20/9 volts 0,5 amperes. Encyclopedia of radio electronics and electrical engineering

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