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Phone surfs the internet

05.01.2010

A passenger on the station platform photographs an incomprehensible black-and-white pattern posted on the scoreboard with a mobile phone, presses a button - and a detailed train schedule appears on the phone's display.

This scene is already common in Japan. Here, almost all cell phones are equipped with a program capable of deciphering information contained in a special type of bar code - QR, a two-dimensional bar code. In other countries, the introduction of this technique is just beginning.

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Latest news of science and technology, new electronics:

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, ... >>

Major risk factor for gambling addiction 07.05.2024

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After the dinosaurs, mushrooms ruled the earth 07.07.2004

As far as is known, the extinction of dinosaurs 65 million years ago was caused by the fall of an asteroid that left a crater with a diameter of 180 kilometers on the Yucatan Peninsula and in the sea off its coast.

The asteroid crashed into the Earth at a speed 40 times the speed of sound. The dust raised by the impact, smoke and soot from the forest fires that had arisen covered the Earth from the sun's rays, the vegetation living by photosynthesis died, followed by animals that fed on plants, and then predators.

Swedish and New Zealand paleontologists in many parts of the Earth have found a thin, four-millimeter layer of coal left by this catastrophe. A lot of fungal spores and remains of their mycelium were found in the coal layer. Apparently, fungi, which do not have photosynthesis and therefore do not need sunlight, then multiplied all over the Earth, feeding on the remains of dead plants and animals. Above is a layer 60 centimeters thick, in which remnants of regenerating vegetation were found.

Ferns were the first to appear after the global catastrophe, then more highly developed plants, including trees. The restoration process took, judging by the thickness of this layer, from several tens to several hundreds of years.

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