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The oldest wheel

09.12.2003

In Slovenia, near Ljubljana, among the remains of a pile settlement in a swamp, an ancient wooden wheel was found. Carbon-14 dating shows the age of this oak and ash piece as between 5100 and 5350 years.

The previous record was held by two wheels found in Switzerland and southern Germany, they are 5000 years old. The diameter of the Slovenian wheel is 140 centimeters, the thickness is 5 centimeters. An oak axle was found nearby, on which, apparently, two such wheels were mounted.

The oldest images of wheels are known from Mesopotamia, they are about 6000 years old, but the originals themselves have not yet come across to archaeologists.

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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

Intel Alder Lake-HX mobile processors 16.05.2022

The line of 12th generation Intel Core mobile processors was officially replenished with the Alder Lake-HX family the day before. These CPUs are designed for use in top gaming laptops and workstations, support overclocking and can offer up to 16 cores: eight high-performance Golden Cove and eight energy-efficient Gracemont.

Intel Alder Lake-HX processors use the same die as desktop 12th generation Core chips (Alder Lake-S). The main differences are in the BGA-performance, less "voracity" and, as a result, reduced operating frequencies. For Alder Lake-HX, a Processor Base Power of 55W at 157W Maximum Turbo Power is claimed, while for desktop counterparts these parameters reach 150W and 241W, respectively.

The flagship Intel Core i9-12950HX features 16 cores, 30MB L3 cache, 32 EU integrated graphics, a dual-channel DDR5-4800/DDR4-3200 memory controller, and Turbo Boost speeds up to 5,0GHz.

In terms of functionality, the system logic set for the Alder Lake-HX CPU is not inferior to desktop counterparts. In total, the new mobile platform provides 48 PCI Express lanes: 16 PCI-E 5.0 lanes, 20 PCI-E 4.0 lanes, and 12 PCI-E 3.0 lanes. There is support for Wi-Fi 6E (Gig+) wireless networks, eight SATA 6 Gb / s ports and a dozen USB 3.2, but there is no integrated Thunderbolt 4 controller.

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