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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

Nanosheets instead of platinum 28.05.2012

Platinum catalysts open up great prospects for alternative energy, for example, in the case of the production of hydrogen from water. However, the high price of platinum makes it difficult to implement the latest technologies on a large scale. Perhaps scientists from the Brookhaven National Laboratory of the US Department of Energy managed to solve this problem.

Scientists have developed a new type of inexpensive electrocatalyst that can efficiently extract hydrogen from water. The catalyst is based on a nickel-molybdenum-nitrogen compound in the form of crumpled sheets of nanometer scale.

Water is an ideal source of pure hydrogen: there is plenty of it on the planet and it does not contain harmful by-product greenhouse gases. The electrolysis of water into oxygen and hydrogen requires an external power source and an efficient catalyst. In this case, the hydrogen yield should be greater than the energy consumption for electrolysis.

In search of an effective catalyst, scientists heated a nickel-molybdenum compound to high temperatures in the presence of nitrogen and suddenly saw that the substance turned into nanosheets. Despite the fact that metal nitrides are widely used, this is the first example of the formation of nanosheets. Nitrogen expanded the lattices of the nickel-molybdenum compound and increased the electron density. Thus, a relatively inexpensive substance in its electronic structure approached noble metals. If these sheets are crumpled, then a catalyst with a large reactive surface area can be obtained.

The new catalyst works almost as well as platinum. In its electrocatalytic activity, it has no equal among other non-precious metal compounds. Moreover, the process of creating nanosheets is simple, scalable and suitable for a wide range of industrial applications.

Although the new catalyst is not the final and ideal solution to the problem of ultra-cheap hydrogen production, nevertheless, it can significantly reduce the cost of hydrogen fuel and equipment for its production.

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