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Water tap with silencer

02.06.2005

Having tested the noise level of faucets and faucets sold in Germany, specialists from the Institute for Building Physics in Stuttgart found that 70% of them make louder noise when running water than the norms allow: the accepted standard allows a fully open faucet to make noise no louder than 30 decibels.

In one of the mixer models, even 47 decibels were noted, which corresponds to a loudly turned on radio. The cheapest brands turned out to be especially noisy, and the more expensive brands indicate the level of noise emitted on the packaging, and such taps even have built-in silencers.

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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

Global warming has shifted the earth's axis 29.04.2021

Research by the Institute of Geographical Sciences and Natural Resources Research has shown that the massive melting of glaciers as a result of global warming has provoked noticeable shifts in the Earth's axis of rotation. This process began around the 1990s. The problem of climate change, which has been provoked by human activity, clearly demonstrates the destructive impact of people on the planet.

The geographic north and south poles of a planet are the points where its axis of rotation intersects the surface, but they are not fixed. Changes in the distribution of the Earth's mass cause the axis, and hence the poles, to move.

In the past, only natural factors such as ocean currents, for example, have contributed to the repositioning of the poles. But new research shows that since the 1990s, the loss of hundreds of billions of tons of ice a year as a result of the climate crisis has sent the poles moving in new directions.

Scientists have found that the direction of the movement of the poles shifted from south to east in 1995, and the average speed of movement from 1995 to 2020 was 17 times higher than from 1981 to 1995. Since 1980, the position of the poles has shifted by about 4 meters.

The largest factor in the displacement of the earth's axis was precisely the melting of glaciers and the "pumping of groundwater." Groundwater is stored underground, but once pumped for drinking or agricultural use, most of it flows into the sea, redistributing its weight around the world.

The scale of this influence means that it is necessary to declare a new geological epoch - the Anthropocene, scientists say. Since the middle of the 20th century, there has been a marked acceleration in carbon dioxide emissions and sea level rise, the destruction of wildlife, and the transformation of land through farming, deforestation, and construction.

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