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31.03.2000

Canadian scientists have developed a new ferromagnetic material from which it will be possible to manufacture high-capacity data drives. Based on polymers and iron, ferromagnetic ceramics were obtained.

When this material is heated, iron atoms begin to move and begin to migrate, merging and forming so-called nanoclusters. The larger the clusters, the stronger the magnetism of the material.

Thus, the magnetic properties of the material can be controlled within certain limits.

<< Back: Sterilization by ultraviolet 01.04.2000

>> Forward: New video discs store up to four hours of video on each side 29.03.2000

Latest news of science and technology, new electronics:

The existence of an entropy rule for quantum entanglement has been proven 09.05.2024

Quantum mechanics continues to amaze us with its mysterious phenomena and unexpected discoveries. Recently, Bartosz Regula from the RIKEN Center for Quantum Computing and Ludovico Lamy from the University of Amsterdam presented a new discovery that concerns quantum entanglement and its relation to entropy. Quantum entanglement plays an important role in modern quantum information science and technology. However, the complexity of its structure makes understanding and managing it challenging. Regulus and Lamy's discovery shows that quantum entanglement follows an entropy rule similar to that for classical systems. This discovery opens new perspectives in the field of quantum information science and technology, deepening our understanding of quantum entanglement and its connection to thermodynamics. The results of the study indicate the possibility of reversibility of entanglement transformations, which could greatly simplify their use in various quantum technologies. Opening a new rule ... >>

Mini air conditioner Sony Reon Pocket 5 09.05.2024

Summer is a time for relaxation and travel, but often the heat can turn this time into an unbearable torment. Meet a new product from Sony - the Reon Pocket 5 mini-air conditioner, which promises to make summer more comfortable for its users. Sony has introduced a unique device - the Reon Pocket 5 mini-conditioner, which provides body cooling on hot days. With it, users can enjoy coolness anytime, anywhere by simply wearing it around their neck. This mini air conditioner is equipped with automatic adjustment of operating modes, as well as temperature and humidity sensors. Thanks to innovative technologies, Reon Pocket 5 adjusts its operation depending on the user's activity and environmental conditions. Users can easily adjust the temperature using a dedicated mobile app connected via Bluetooth. Additionally, specially designed T-shirts and shorts are available for convenience, to which a mini air conditioner can be attached. The device can oh ... >>

Energy from space for Starship 08.05.2024

Producing solar energy in space is becoming more feasible with the advent of new technologies and the development of space programs. The head of the startup Virtus Solis shared his vision of using SpaceX's Starship to create orbital power plants capable of powering the Earth. Startup Virtus Solis has unveiled an ambitious project to create orbital power plants using SpaceX's Starship. This idea could significantly change the field of solar energy production, making it more accessible and cheaper. The core of the startup's plan is to reduce the cost of launching satellites into space using Starship. This technological breakthrough is expected to make solar energy production in space more competitive with traditional energy sources. Virtual Solis plans to build large photovoltaic panels in orbit, using Starship to deliver the necessary equipment. However, one of the key challenges ... >>

New method for creating powerful batteries 08.05.2024

With the development of technology and the expanding use of electronics, the issue of creating efficient and safe energy sources is becoming increasingly urgent. Researchers at the University of Queensland have unveiled a new approach to creating high-power zinc-based batteries that could change the landscape of the energy industry. One of the main problems with traditional water-based rechargeable batteries was their low voltage, which limited their use in modern devices. But thanks to a new method developed by scientists, this drawback has been successfully overcome. As part of their research, scientists turned to a special organic compound - catechol. It turned out to be an important component that can improve battery stability and increase its efficiency. This approach has led to a significant increase in the voltage of zinc-ion batteries, making them more competitive. According to scientists, such batteries have several advantages. They have b ... >>

Alcohol content of warm beer 07.05.2024

Beer, as one of the most common alcoholic drinks, has its own unique taste, which can change depending on the temperature of consumption. A new study by an international team of scientists has found that beer temperature has a significant impact on the perception of alcoholic taste. The study, led by materials scientist Lei Jiang, found that at different temperatures, ethanol and water molecules form different types of clusters, which affects the perception of alcoholic taste. At low temperatures, more pyramid-like clusters form, which reduces the pungency of the "ethanol" taste and makes the drink taste less alcoholic. On the contrary, as the temperature increases, the clusters become more chain-like, resulting in a more pronounced alcoholic taste. This explains why the taste of some alcoholic drinks, such as baijiu, can change depending on temperature. The data obtained opens up new prospects for beverage manufacturers, ... >>

Random news from the Archive

video surveillance exam 19.12.2013

The Minister of Education and Science of the Russian Federation Dmitry Livanov said that the Unified State Exam in 2014 will be controlled using video cameras. The live broadcast of the exam will be seen by public observers, as well as parents of students.

"The so-called federal observers will appear at the examination points. We will provide almost every audience for the exam with video surveillance equipment, video recording. And parents will be able to see, including in a live broadcast, how their children take exams," Livanov said in an interview on the TV channel NTV.

Earlier, Livanov said that video cameras from the presidential elections in 2012 will probably be used to equip the exam sites. According to him, the use of video cameras is a forced measure, the need for which will disappear "when everyone learns to pass honestly." At the same time, increasing information transparency and public control over the conduct of a unified exam is one of the main activities of the department, the minister said.

These are not the first innovations that will appear in 2014 during the USE. Earlier, the head of the Federal Service for Supervision in Education and Science (Rosobrnadzor), Sergei Kravtsov, said that the points for passing the exam would be equipped with metal detector frames. Metal detectors will be needed for the temporary removal of mobile devices from schoolchildren - they cannot be brought to the exam.

Thus, participants in the USE in 2014 will have to go through two stages of verification before the exam. First, the organizers will make sure that the student has all the necessary documents, and then the police will check if he has mobile devices with him, with which you can find out the answers. However, metal detector frames, according to Kravtsov, will not appear in all regions, but only where the largest number of violations were found during the exams of previous years.

The results of the exam next year will also protect against fraud to the maximum. Deputy Minister of Education and Science of the Chelyabinsk Region Elena Kouzova reported a little earlier that from 2014 graduates would not be issued paper certificates of passing the unified state exam.

It is planned that by this time all professional educational institutions will have already finished connecting to the unified federal information system (FIS USE), which will store information about the results of passing state exams, as well as the presence of victories in district, regional and all-Russian Olympiads, which are given to graduates the right to preferential admission to educational institutions.

At the same time, starting from 2014, the results of the USE will be valid for admission to universities and colleges for four years, although previously they were relevant for only a year and a half and gave only two attempts to enter professional educational institutions. The universities themselves will have to transfer to the FIS USE information about the established admission criteria for applicants, about the admission rules, applications received from applicants and the results of their entrance examinations.

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