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Astronomers told where high energy particles attacking the Earth come from Astronomers told where high energy particles attacking the Earth come from

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Astronomers told where high-energy particles attacking the Earth come from

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Scientists from the Columbia Astrophysical Laboratory, using supercomputers, found out that high-energy particles dangerous for astronauts and aircraft are born in the atmosphere of the Sun. The study is published in The Astrophysical Journal Letters.

Astronomers told where high-energy particles attacking the Earth come from

Astronomers have used supercomputers at Columbia, NASA and the US National Energy Research Computing Center to simulate the behavior of ions and electrons in space. It turned out that magnetic fields in the outer atmosphere of the Sun are capable of accelerating particles to speeds close to the speed of light. At the same time, they fall to Earth, where they can disable the electronic devices of satellites and endanger the lives of astronauts. Radiation radiation from them can also reach aircraft passengers. The results of the study will make it possible to more effectively predict such outbreaks.

Scientists have been trying to find the source of high-energy particles for more than 70 years and have long suspected that they are generated by solar plasma, which makes up the atmosphere of stars, including the Sun. Particles in a plasma move randomly and unpredictably, so it has not yet been possible to fully demonstrate how this happens.

The vast majority of observable matter in the universe is in the plasma state, so the results of scientists will allow a better understanding of the formation of high-energy particles in distant stars and around black holes. Over the next few years, NASA’s Parker Solar Probe will be heading to the Sun, which will be able to confirm the paper’s findings by directly looking at particles that are generated in the Sun’s outer atmosphere.

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In the United States created a refrigerator for third world countries that does not require food

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In the United States created a refrigerator for third world

Engineers have created a cooling device that does not require electricity to operate. An article about this was published in Cell Reports Physical Science.

In the United States created a refrigerator for third world countries that does not require food

The device was invented by scientists at the Massachusetts Institute of Technology. Outwardly, it looks like a thick pizza box wrapped in foil. The “box” is made of three layers of material. At the bottom is a reflective foil, in the middle is a porous material based on hydrogel with a large proportion of water, on top is airgel, a very light material, 99% air. When heated, water evaporates from the hydrogel, cooling it, and enters the airgel, where it is additionally cooled by infrared radiation. In addition, the airgel cap serves as an insulator and reflects light as well as the bottom layer.

The device must be placed above what needs to be cooled. It can reduce the temperature of an object by 10 degrees compared to the environment. According to the developers, the system is able to increase the shelf life of food products by 40% in conditions of high humidity, or three times if it is hot and dry outside. First of all, such a refrigerator is in demand in hot third world countries, where there are problems with electricity.

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Xiaomi’s first 200 megapixels. Xiaomi 12T and Xiaomi 12T Pro pose in quality renders from a reliable source

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Xiaomis first 200 megapixels Xiaomi 12T and Xiaomi 12T Pro

Soon Xiaomi will introduce new flagships for the global market – Xiaomi 12T and Xiaomi 12T Pro. When exactly the premiere will take place is not reported, but insider Evan Blass has already published high-quality renderings of both models.

Xiaomi's first 200 megapixels.  Xiaomi 12T and Xiaomi 12T Pro pose in quality renders from a reliable source

There are no external differences between them – only the inscriptions in the camera blocks are different: 108 MP for Xiaomi 12T and 200 MP for Xiaomi 12T Pro. Both models are expected to have 6.67-inch AMOLED screens with a resolution of 2712 x 1220 pixels, and screen protection will be provided by tempered glass Gorilla Glass 5. Xiaomi 12T Pro will be based on Snapdragon 8 Plus Gen 1 SoC, Xiaomi 12T hardware platform – MediaTek Dimensity 8100. The devices are also credited with 5000 mAh batteries with support for 120 W fast charging.

Xiaomi's first 200 megapixels.  Xiaomi 12T and Xiaomi 12T Pro pose in quality renders from a reliable source

Xiaomi's first 200 megapixels.  Xiaomi 12T and Xiaomi 12T Pro pose in quality renders from a reliable source

Evan Blass has previously been noted for many truthful leaks. So, at one time he published exact images of the Sony Xperia 5 II, Galaxy Note20, Galaxy Z Fold 2, Galaxy Tab S7, Galaxy Watch 3 and Samsung Galaxy Buds Live, Xiaomi 12 before their official premiere.

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Scientists set a record by cooling matter to 220 microkelvins

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Scientists set a record by cooling matter to 220 microkelvins

Physicists set a record by cooling matter to the lowest temperature in history. An article about this was published in Physical Review Research.

Scientists set a record by cooling matter to 220 microkelvins

The behavior of matter at temperatures close to absolute zero is very different from what people are used to. Some substances pass into a superconducting or superfluid state, and at extremely low temperatures, the quantum properties of elementary particles appear, which can be used for calculations.

Physicists at the University of Basel have cooled a tiny copper circuit on a silicon chip to 220 microkelvins, the lowest temperature ever achieved in such experiments. This was achieved using a cryostat and a magnetic field: the spins of the copper atoms in the chip were aligned, due to which they cooled more strongly.

In the future, scientists hope to cool quantum processors and conventional semiconductor electronic components using this technology.

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