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Latest news of science and technology, new electronics:

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, ... >>

Major risk factor for gambling addiction 07.05.2024

Computer games are becoming an increasingly popular form of entertainment among teenagers, but the associated risk of gaming addiction remains a significant problem. American scientists conducted a study to determine the main factors contributing to this addiction and offer recommendations for its prevention. Over the course of six years, 385 teenagers were followed to find out what factors may predispose them to gambling addiction. The results showed that 90% of study participants were not at risk of addiction, while 10% became gambling addicts. It turned out that the key factor in the onset of gambling addiction is a low level of prosocial behavior. Teenagers with a low level of prosocial behavior do not show interest in the help and support of others, which can lead to a loss of contact with the real world and a deepening dependence on virtual reality offered by computer games. Based on these results, scientists ... >>

Traffic noise delays the growth of chicks 06.05.2024

The sounds that surround us in modern cities are becoming increasingly piercing. However, few people think about how this noise affects the animal world, especially such delicate creatures as chicks that have not yet hatched from their eggs. Recent research is shedding light on this issue, indicating serious consequences for their development and survival. Scientists have found that exposure of zebra diamondback chicks to traffic noise can cause serious disruption to their development. Experiments have shown that noise pollution can significantly delay their hatching, and those chicks that do emerge face a number of health-promoting problems. The researchers also found that the negative effects of noise pollution extend into the adult birds. Reduced chances of reproduction and decreased fertility indicate the long-term effects that traffic noise has on wildlife. The study results highlight the need ... >>

Random news from the Archive The age of the solid core in the center of the Earth is determined 09.02.2019 Earth's magnetosphere extends far into space and deflects most of the high-energy particles that would otherwise bombard our planet's surface, rendering it virtually uninhabitable. Geomagnetism arises deep in the bowels of the Earth, where a solid iron-nickel core is located, heated to almost 5500 ° C. It is surrounded by a thicker and more liquid outer core, the material of which continuously cools and settles, building up solid layers in the center. This causes the conductive hot alloy liquid core to stir and create a geomagnetic field. Once the earth's core was heated more strongly, it remained entirely liquid and seethed, generating a magnetic field. However, its temperature gradually decreased, mixing slowed down, and the magnetosphere weakened to a level dangerous for life on the planet. Fortunately, at some point, a solid core began to form in its center, which gave the Earth's "magnetic dynamo" a new strength. Various models place the event between 0,5 and 2,5 billion years ago, but a new study by geologists led by University of Rochester professor John Tarduno puts the date fairly accurately at 565 million years ago. Indeed, the core of the Earth remains inaccessible to direct research, however, all changes in the global magnetic field are imprinted in the orientation of the particles of certain minerals. Scientists analyzed it in crystalline pyroxenes and spars found under the town of Sept-Iles in Quebec, Canada and dated to 550-600 million years old. The crystals showed that in that era the magnetosphere was going through hard times, weakening and changing polarity ten times faster than it happens in the modern era. However, from a certain moment the process stopped and suddenly began to develop in a completely different direction. The magnetic field began to intensify. Interestingly, this time coincides with the end of the Ediacaran period, which culminated in one of the global extinctions of the biosphere: judging by the data of Tarduno and his colleagues, it could well be caused by the weakening of the magnetosphere. By the way, some previous data also pointed to this. The subsequent restoration and strengthening of the magnetic field coincided with the next important stage in the evolution of life - the Cambrian explosion of biodiversity, during which the ancestors of all modern animal types appeared. Perhaps it was the increased bombardment of the planet by cosmic radiation that contributed to the survival and development of new life forms - mobile, capable of going to the depth of water, or well protected by a shell or exoskeleton.

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