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Spectacular tricks and their clues

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

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Latest news of science and technology, new electronics:

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 ... >>

Electron spin for quantum information transfer 18.05.2024

The transfer of quantum information remains one of the key tasks of modern science. Recent advances in the use of electron spin to expand the capabilities of information transfer in quantum systems have become very important. Researchers at Lawrence Berkeley National Laboratory are pushing the frontiers of quantum information science by experimenting with the possibilities of electron spin. Electron spin, a natural quantum bit, is a potentially powerful means for storing and transmitting information in quantum systems. Magnon wave packets, collective excitations of electron spin, have revealed their potential to transmit quantum information over significant distances. The work of Berkeley Lab researchers has revolutionized the way such excitations propagate in antiferromagnets, opening up new prospects for quantum technologies. Using pairs of laser pulses, scientists disrupted antiferromagnetic order in one place and simultaneously studied it in another, creating ... >>

Sound-absorbing silk 17.05.2024

In a world where noise is becoming increasingly intrusive, the emergence of innovative materials that can reduce its impact is of great interest. MIT researchers have unveiled a new sound-absorbing silk fabric that promises to revolutionize quiet spaces. The Massachusetts Institute of Technology (MIT) has made significant breakthroughs in the field of sound absorption. Researchers have developed a special silk fabric that can effectively absorb sound and create cozy, quiet environments. The fabric, thinner than a human hair, contains a unique vibrating fiber that is activated when voltage is applied to it. This feature allows the fabric to be used to suppress sound waves in two different ways. The first method uses fabric vibrations to generate sound waves that cover and cancel out unwanted noise, similar to noise-canceling headphones. This p ... >>

Random news from the Archive

Green energy will cause a crisis of rare metals 19.03.2012

A study published in Environmental Science and Technology says that the switch to clean energy sources will cause a supply crisis for scarce metals. And these materials are very important for modern industry.

For example, two rare earth metals, dysprosium and neodymium, are key to modern wind turbine and electric vehicle technologies. A large-scale transition from coal-fired power plants and gasoline cars to windmills and electric vehicles could lead to an increase in demand for these two already scarce metals, which, moreover, are mainly mined in one country - China. Demand could grow by 600-2600% over the next 25 years, with today's dysprosium and neodymium production increasing by only a few percent a year.

Today, some governments and industrial companies are expressing concern about the sustainability of the supply of 17 rare earth elements, which are used to manufacture aircraft equipment, lasers, medical devices, and more. Without these materials, it is impossible to continue the development of environmentally friendly technologies and reduce the level of carbon dioxide in the atmosphere to the level of 450 parts per million.

A team of scientists led by Randolph Kirchein analyzed the supply of lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium and yttrium under various scenarios for the development of the economic situation and progress. They predicted the demand for these 10 rare earths until 2035. In one scenario, demand for dysprosium and neodymium could increase by 2600% and 700% respectively. To meet this need, the production of, for example, dysprosium must double every year. Despite impressive progress in expanding the production of rare earth materials, it will be very difficult to achieve such a figure.

Scientists believe that the crisis can only be avoided by replacing rare earth materials with cheaper and more common ones, as well as by recycling waste.

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