Tigers and infrasound. Free Technical Library News

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

Tigers and infrasound

05.08.2003

Zoologists from the Omaha Zoo (USA), having studied the vocal capabilities and hearing of different types of tiger, came to the conclusion that huge cats widely use infrasonic frequencies.

Low frequency sound is better distributed and heard from a distance. In the roar of the Amur tiger, the main energy falls on low sounds with a frequency of about 300 hertz with components lying in the infrasound region below 20 hertz. These frequencies pass better through the dense undergrowth that is common in tiger habitats. The researchers even measured the response of the tiger's brain to sounds of different frequencies by inserting electrodes into the brains of sedated Amur, Sumatran and Bengal tigers.

It turned out that the hearing of the tiger is most sensitive to sounds with a frequency of about 500 hertz (in humans - about 1000 hertz). The tiger uses low frequency sounds to drive competitors away from its hunting ground and to attract mates.

<< Back: Bottle furniture 06.08.2003

>> Forward: Radio signal from an artery 03.08.2003

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

Sleep supports antioxidant processes in the body 25.07.2018

Sleep is a state that is natural not only for humans, but also for almost all animals, starting with insects. While we sleep, our body rests, the brain processes the information received during the day, our health is strengthened. It turned out that sleep also plays an important role as an antioxidant agent: it reduces oxidative stress, and the latter, on the contrary, can cause sleep disturbances.

This two-way relationship between the two processes was identified by a team of scientists from Columbia University (New York, USA). Biologists conducted a study in which they observed mutant types of Drosophila fruit flies. Insects bred in the laboratory sleep very little. Scientists have determined that due to lack of sleep, these fruit flies are subject to oxidative stress to a greater extent than their relatives who do not have sleep problems.

Oxidative stress develops when free oxygen radicals (molecules without one electron) damage healthy cells in the body. Molecules can start a chain reaction - and in this case, a serious disease develops: from diabetes to cancer. In addition, oxidative stress damages neurons, triggering pathological responses. Free radicals are inevitably formed in the body, in a certain amount they are even useful: they help fight bacteria. However, if there are too many of them, they themselves become harmful to health. Their number increases under the influence of various factors: stress, poor environment, medication, heavy physical activity.

As a rule, antioxidants help to cope with these radicals - nutrients that negate the chemical reactions triggered by free oxygen molecules. These substances can be obtained from foods - mainly fruits and vegetables - and from special vitamins. Now sleep can also be added to the list of "antioxidants".

Researchers have found that one of the functions of sleep is to protect against oxidative stress. Based on this, the authors also suggested that oxidative stress may also affect sleep. Testing this hypothesis, they stimulated the genes of the antioxidant system in Drosophila, thereby reducing oxidative stress. This change literally put the flies to sleep. Otherwise, the unpleasant state caused insomnia.

See full Archive of science and technology news, new electronics

All languages of this page

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