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Scarecrow can run and swim

15.04.2002

Two Irish students have built a robot that runs on high-voltage wires and scares away birds sitting on the wires with a siren and a flash lamp.

The robot takes energy for its actions from the wires themselves through an induction coil. They say that bird droppings harm the wires and the birds must be chased away. And in the United States, a crocodile robot is being tested to scare away pelicans, which in the south of the country attack fish ponds and eat them clean.

The green floating scarecrow carries a solar panel on its back, providing energy for swimming. The artificial crocodile can even shoot water at birds.

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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

Reconstructed the navel of the earth 12.11.2004

Where is the "navel of the earth"? It turns out that this is not an idiom, but a real point in the Greek city of Delphi.

According to the myth, Zeus, wishing to know where the center of the world is, released two eagles to the east and west. Where they met is the "navel of the earth." The Greeks marked this place with a cone-shaped marble stone weighing about a ton, which is now located near the destroyed by an earthquake in 373 BC.

Physicists from the University of Cagliari (Italy) used the magnetic characteristics of minerals to estimate the temperature of a cloud of volcanic ash and stones ejected by Vesuvius during the famous 79 AD eruption that killed the city of Pompeii. Minerals are formed from a melt, acquiring magnetization from the Earth's magnetic field upon cooling. If subsequently they were heated, this magnetization changed or completely disappeared. Therefore, by measuring the magnetic properties of the cobblestones and ash ejected by the volcano, it is possible to determine what temperature these fragments experienced.

Two hundred volcanic stones and other fragments, such as tiles from the roofs of Pompeii, have been analyzed. It turned out that the cloud of volcanic ash thrown out by Vesuvius had a temperature of over 850 degrees Celsius, but, having reached the city, had time to cool below 380 degrees.

Most of the measured objects were heated from 240 to 340 degrees Celsius. But on the leeward side of the houses, where turbulence effectively sucked cold air into a cloud of volcanic gases, the temperature rose only to 180 degrees. Which, however, was also enough for the death of all living things in the city.

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