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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 ... >>

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High Speed ​​Travel to Mars 26.01.2023

NASA has selected several new space projects for possible implementation in the future. Among them is the project of American scientists, which consists in using a new type of nuclear engine in a space rocket so that it can fly to Mars in 45 days.

NASA now has very far-reaching plans for space exploration, and therefore actively attracts scientists to develop new technological projects that can be implemented in space. Focus has already written about some of them, which concern, for example, the creation of an oxygen pipeline on the Moon and a new aircraft for flights on Titan. At this stage, NASA has selected 14 projects that initially received funding for further development. That is, this is only the first phase of the study, and only a few projects will go to the third phase.

NASA is going to blow up astronauts to the moon in a few years, and then at the end of the decade to begin construction of the first lunar base. The next stage in space exploration will be a landing on Mars, which may already take place in the next decade. Therefore, projects related to the Red Planet are of particular interest to the US space agency.

Among such projects is a new nuclear propulsion concept for a space rocket from Ryan Gosse of Florida State University in the US. In fact, the concept is not entirely new, although it is an innovative technology that may receive further funding. Back in the 20th century, the United States was already engaged in the creation of a nuclear thermal engine and a nuclear electric engine for space rockets. But these projects have not received further development.

Gosse proposed to combine two types of nuclear engine into one, which would consist of two parts, i.e. thermal and electrical. This will allow, according to the scientist, to get to Mars in 45 days. This nuclear engine, as mentioned above, will consist of two components that will complement each other.

For example, a nuclear thermal propulsion consists of a nuclear reactor that heats liquid hydrogen fuel, turns it into ionized hydrogen gas, which then creates thrust. On the other hand, a nuclear electric propulsion consists of a nuclear reactor providing electrical power to a Gall effect propulsion, that is, an ion propulsion generating an electromagnetic field. This field ionizes and accelerates an inert gas such as xenon to create thrust.

Both of these engines have significant advantages over conventional chemical propulsion in space rockets. The new engine, according to Gosse, will combine the advantages of both nuclear rocket engines - thermal and electric.

Such a double structure could provide a fast flight to Mars in 45 days, and so people can quickly fly to other, more distant planets in the solar system.

Today, conventional rocket engines are capable of delivering astronauts to Mars in 9-12 months. Therefore, such a short trip of 45 days will significantly reduce the risks of a manned flight, and will also be safer for the health of astronauts.

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