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Collection New Radio Yearbook No. 20
You can free and without registration download Collections New Radio Yearbook. Free collections contain circuit diagrams of modern radio electronic devices with detailed descriptions on the following topics: automation, auto electronics, audio equipment, consumer electronics, video equipment, measurements, power supplies, microcontrollers, amateur radio technologies, electronic components.
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Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>
More and more often we hear about an increase in the amount of space debris surrounding our planet. However, it is not only active satellites and spacecraft that contribute to this problem, but also debris from old missions. The growing number of satellites launched by companies like SpaceX creates not only opportunities for the development of the Internet, but also serious threats to space security. Experts are now turning their attention to the potential implications for the Earth's magnetic field. Dr. Jonathan McDowell of the Harvard-Smithsonian Center for Astrophysics emphasizes that companies are rapidly deploying satellite constellations, and the number of satellites could grow to 100 in the next decade. The rapid development of these cosmic armadas of satellites can lead to contamination of the Earth's plasma environment with dangerous debris and a threat to the stability of the magnetosphere. Metal debris from used rockets can disrupt the ionosphere and magnetosphere. Both of these systems play a key role in protecting the atmosphere and maintaining ... >>
There are quite a few mysteries in the world of science, and one of them is the strange behavior of bulk materials. They may behave like a solid but suddenly turn into a flowing liquid. This phenomenon has attracted the attention of many researchers, and we may finally be getting closer to solving this mystery. Imagine sand in an hourglass. It usually flows freely, but in some cases its particles begin to get stuck, turning from a liquid to a solid. This transition has important implications for many areas, from drug production to construction. Researchers from the USA have attempted to describe this phenomenon and come closer to understanding it. In the study, the scientists conducted simulations in the laboratory using data from bags of polystyrene beads. They found that the vibrations within these sets had specific frequencies, meaning that only certain types of vibrations could travel through the material. Received ... >>
Random news from the Archive
Created a unique cold matter
10.09.2022
A team of scientists at Kyoto University has created the coldest matter in the universe. It is three billion times colder than interstellar space.
For the experiment, scientists used fermions, which physicists call any particles in the composition of matter. They cooled the ytterbium atoms to about a billionth of a degree above absolute zero, the hypothetical temperature at which atomic motion would cease.
Lasers were used for cooling. The conducted experiment simulates the model of quantum physics, first proposed in 1963 by theoretical physicist John Hubbard. It allows atoms to exhibit such unusual quantum properties as superconductivity.
It is noted that interstellar space is never so cold, as it is evenly filled with cosmic microwave background radiation. According to scientists, the created matter is even colder than the Boomerang Nebula, which is the coldest known region of space. The temperature is only one degree above absolute zero.
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