Washing with clean water. Free Technical Library News

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

Washing with clean water

15.10.2005

Australian scientists from the University of Canberra suggest washing clothes without any powders or soaps.

Richard Pashley, professor of physical chemistry, found that completely degassed water, devoid of all dissolved gases, washes out even greasy stains. The test was carried out by smearing the white fabric with petroleum jelly - it was completely washed off. Fat in the form of microscopic droplets rises to the surface in a few minutes.

Pashley believes that microscopic air bubbles hold dirt particles together, creating a surface tension between them, and "glue" these accumulations to the fabric. If the bubbles are completely removed, the impurities break into many particles that are easily removed from the fabric.

Now the researchers are busy comparing the cleansing power of ordinary water with the addition of washing powder and degassed water. After that, it remains to be seen whether degassing water at home will not cost more than conventional laundry detergents.

<< Back: pollen monitor 17.10.2005

>> Forward: Wobbling bicycle 13.10.2005

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

Why is it difficult to sleep in a new place? 04.05.2016

When someone says that it is difficult for him to fall asleep in a new place, he is not making it up - indeed, sleep researchers have long known that sometimes a person who finds himself in an unfamiliar bed falls asleep for a long time and then sleeps badly all night.

Masako Tamaki and her colleagues at Brown University found that we don't get enough sleep in a new place because we literally sleep with only one hemisphere. For the experiment, several dozen volunteers were invited to the laboratory, who were supposed to spend two nights here.

Brain activity was recorded using a whole range of methods: magnetoencephalography, which can be used to observe magnetic fields arising from the electrical activity of certain brain areas; structural magnetic resonance imaging, which allows you to see the structure of the brain and evaluate the volume of nervous tissue; polysomnography, when the course of sleep is assessed simultaneously by EEG, by heart rate, by eye movement, by muscle activity, plus a number of other parameters. Neuroscientists were primarily interested in slow-wave brain activity, indicating the depth of sleep.

If on the second night in the laboratory the right and left hemispheres worked in the same way, plunging into deep sleep, then on the first night the left worked differently - the so-called default neural network was actively functioning in it.

A characteristic feature of the default circuit is that its neurons remain active when a person is not busy with anything, does not perform any specific task, when he is simply idle. (Some believe that it is this network, which works by default, that provides us with what can be called self-awareness, the understanding that I am I.) However, its activity is most pronounced in the waking state - from which we can conclude that in the first night the brain actually slept only with its one - right - half.

In another version of the experiment, participants had to sleep to the accompaniment of beeping, repeated throughout the night at random intervals. Judging by the reaction of the brain, the sleepers heard the sound, but, again, on the first night, the left hemisphere reacted most strongly to it.

Finally, at the third stage, if a sound signal was heard through a dream, it was necessary to press a special button with a finger. The sound itself came either from the left or the right, and, as it turned out, a person woke up faster and more often when something came to him from the right - that is, when the beep went to the left hemisphere.

Scientists have concluded that in a new place, only one hemisphere, the right hemisphere, plunges into a truly deep sleep, while the left hemisphere balances on the verge of sleep and wakefulness.

See full Archive of science and technology news, new electronics

All languages of this page

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