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A large selection of riddles on various topics for adults and children.

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Rebus proverbs and sayings

Riddles for adults and children

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Rebus proverbs and sayings in Russian


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Rebus proverbs and sayings in Ukrainian

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Latest news of science and technology, new electronics:

Blinking of the magician and his audience 19.05.2024

Magic and illusions have always captured the attention of the public, but what happens behind the scenes of the magician and in the brains of his audience? Scientists from the UK decided to solve this mystery by conducting a new study involving ten illusionists of varying experience. Illusionists, some of whom had been practicing magic for more than half a century, others for only six months, were invited to demonstrate the same trick - the popular coin trick. Recordings of their performances during training and on stage showed that each of them began to blink significantly more often at the moment of performing the trick. The study's findings indicate that magicians' blink rate may be related to unconscious aspects of their performance. At the same time, as scientists have found, spectators also begin to blink more often, following the movements of the illusionist. This observation supports the idea that magicians may be catalysts for blinking in audiences. Additional research has shown that magicians blink more often during ... >>

Ultrasonic coffee machine 19.05.2024

Iced coffee has become an integral part of coffee culture in recent years. Therefore, engineers from the University of New South Wales decided to improve its preparation. They have developed an ultrasonic coffee machine that reduces the cold brew time for ground coffee beans from 12-24 hours to significantly less time. Iced coffee, or "Cold brew", is popular due to its smoothness, low acidity and low bitterness. It is prepared by steeping ground coffee in cold water for a long time. Unlike traditional hot brewing, which often imparts bitterness to coffee, cold brewing extracts more delicate and complex flavors from the coffee beans. The innovative system, presented by a team of engineers, introduces ultrasonic technology into the coffee preparation process. The system uses ultrasonic waves to speed up the process of extracting oils, flavor and aroma from ground coffee. This allows you to significantly reduce the time ... >>

The speech of sperm whales is similar to that of humans 18.05.2024

In the world of the ocean, where the mysterious and unknown coexists with the studied, sperm whales, with their huge brains, are of particular interest to science. Researchers, working with a huge array of audio recordings collected during the Dominica Sperm Whale Project (DSWP) - more than 8000 recordings, seek to unravel the secrets of their communication and understand the structure and complexity of the language of these mysterious creatures. By studying in detail the recordings of 60 sperm whales in the eastern Caribbean, scientists have revealed surprising features of their communication, revealing the complexity of their language. "Our observations indicate that these whales have a highly developed combinatorial communication system, including rubato and ornaments, which indicates their ability to quickly adapt and vary during communication. Despite significant differences in evolution, sperm whales have elements in their communication that are characteristic of human communication," says Shane Gero, a biologist at Carleton University and director of the CETI project. Issl ... >>

Random news from the Archive

Created a battery that can last up to 400 years 23.12.2022

Mia Le Tay, a doctoral student at the University of California, Irvine, coated gold nanowires with manganese dioxide and an electrolyte gel similar to Plexiglas. She did it without any far-reaching plans - but the result was incredible.

The student worked as a member of a group of researchers who studied the design of nanowires in batteries. She knew that the wires tend to break after a certain number of charge cycles. Typically, laptop battery nanowires last about 300-500 cycles.

However, covering the sample with a hastily invented composition, she was surprised to find a dense film. The future scientist spent 10 thousand charge cycles - and did not notice signs of wear on the device. It looked promising, so Tai invited senior colleagues to evaluate the result.

The group carried out 200 charge cycles within two months, and only after that it was stated that the coating, invented quite by accident, began to lose its properties.

Scientists have calculated that this margin of safety is enough for 400 years of operation of the device.

In the future, they plan to offer Tai's invention for commercial use. It is expected that gel nanowires can be used in batteries of smartphones, laptops and other devices.

Other interesting news:

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News feed of science and technology, new electronics

 

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▪ site section Chargers, accumulators, batteries. Article selection

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