Global dimming. Free Technical Library News

NEWS OF SCIENCE AND TECHNOLOGY, NOVELTY IN ELECTRONICS
Free technical library / timeline

global dimming

08.08.2005

In addition to global warming, we are also threatened by global darkening. This conclusion was reached by geophysicists, summing up the results of half a century of measurements of daylight illumination in different parts of the globe.

British scientist Jerry Stanhill, who works in Israel, found that over the past 50 years, daytime illumination of this region has fallen by 22%. After reviewing data from other countries, he found that during this time in the United States it became darker by 10%, in some areas of the former USSR - by almost 30%, in the British Isles the illumination fell by 16%. This conclusion is confirmed by Australian experts.

The phenomenon appears to be related to air pollution. Tiny particles of soot from car exhausts and factory chimneys block out some of the sunlight and increase the reflectivity of clouds and the atmosphere in general.

So far, this effect is not noticeable to the naked eye, but it will undoubtedly affect many aspects of life on Earth - from climate to solar power plants and even plant photosynthesis.

<< Back: light from the asphalt 09.08.2005

>> Forward: Vaccination against atherosclerosis 06.08.2005

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

Gold nanoparticles were synthesized using mimioza 22.07.2017

An international team of researchers has learned how to synthesize gold-containing nanoparticles using bacteria that live inside the bashful mimosa (Mimosa pudica).

The resulting compounds have pronounced bactericidal properties. According to the authors of the study, their work can be useful for creating new drugs that fight antibiotic-resistant bacteria.

"The present study proposes a fast and environmentally friendly method for the synthesis of gold-containing nanoparticles using the new symbiotic bacterium Aneurin Bacillus migulanus 14, which lives in bashful mimosa. The effectiveness of the new substance in combating pathogens is shown by the example of a significant reduction in the activity of the pathogen Pseudomonas aeruginosa," says in an article published in the journal Environmental Toxicology and Pharmacology.

Due to the widespread use of antibiotics, there are now more and more drug-resistant microorganisms in the world, so people are looking for new ways to fight bacteria. Studies show that various metal nanoparticles, especially those containing silver and gold, have strong antibacterial properties. But, unfortunately, the chemical synthesis of such compounds is not only very expensive, but also unsafe, since it involves the use of toxic elements hazardous to human health and the environment.

In the new work, the synthesis process itself using the bacterium Aneurin Bacillus migulanus 14 was a multi-step process, but after optimization by the researchers, it can be completed in as little as 20 minutes. At the same time, the synthesis does not require high temperatures, complex and expensive equipment, or the use of toxic reagents.

The researchers tested the antimicrobial activity of the new compounds against a series of pathogenic bacteria. As a result, it turned out that gold helps very well against various infections. Nanoparticles coped best with Pseudomonas aeruginosa P. Aeruginosa, Escherichia coli E. Coli, Staphylococcus aureus S. aureus, hay bacillus B. Subtilis, and Klebsiella pneumoniae K. Pneumoniae.

See full Archive of science and technology news, new electronics

All languages of this page

Home page | Library | Articles | Website map | Site Reviews