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Acoustic sensors on military helmets will detect snipers

25.05.2009

Remembering the aphorism "If you want peace, prepare for war," American engineers are increasingly equipping the armor of their soldiers with all kinds of electronics.

Specialists from Vanderbilt University completed the development in 2006, and have now completed testing of a system that will help the infantryman during protracted street battles. These are four sensors on the helmet plus a processor and a transmitter. Sensors perceive shock waves from a shot from a sniper rifle and from a bullet flying at supersonic speed.

The processor determines the direction by the parameters of the first wave, and the distance to the shooter by the second wave. The sensitivity of the entire system would be low if the helmets of all the soldiers in the platoon were not equipped with similar sensors and the data did not enter the commander's computer.

The display of this computer displays information about the position of the sniper, even if he is perfectly camouflaged. The whole system weighs the same as the four AA batteries that power it, and costs 1000 US dollars, and it can be assembled from parts available on the market.

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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

The aging molecule found 05.01.2019

According to scientists from the University of Michigan, the key to aging lies right below us. Researchers have discovered a special molecule in roundworms that is extremely closely related to the aging process.

Scientists have found the molecule responsible for the aging process in the species C. elegans. Initially, the researchers studied a number of age-related changes in worm motility. It turns out that the lowest level of mobility in worms occurs closer to the "average" age of the worms. Usually, the life span of C. elegans is no more than 22 days, and a change in activity was observed on the 11-12th day.

In the course of studying the connections between motor neurons and active muscle neurons, it was possible to find out that the SLO-1 molecule prevents the interaction between them. Its appearance led to a decrease in activity and further degradation of motor function.

The researchers decided to try to block this molecule in two different ways. The first method was genome editing, and the second method was the use of paxillin, which blocked the channels involved in the creation of SLO-1. Both methods gave a positive result, but the second method, for obvious reasons, became more preferable.

As a result, the researchers found an increase in life expectancy in the "experimental group" of worms. But the main result of the study is that a similar molecule is present in other living beings, including mammals.

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