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Helping color blind people

08.07.2000

According to Deutsche Welle, the American geographer S. Brewer of the University of Pennsylvania has developed a special color scale for colorblind people, on the basis of which a computer can recolor maps, replacing one color with another in accordance with the individual characteristics of the user's color perception.

The novelty should help people suffering from color vision disorders and having difficulty reading maps and atlases.

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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

Bats pretend to be wasps 17.05.2022

Bats prey on insects, but who preys on bats? Birds. Naturally, not tits with sparrows, but birds of prey, and nocturnal ones, that is, owls - let's not forget that many bats are active at dusk or even at night.

It is difficult to dodge an owl, but some bats have found a way: they scare away owls by buzzing like bees or wasps. Employees of the University of Naples named after Frederick II, studying the big bats, noticed once that the caught bats buzz like a wasp. Moreover, these were not the usual call signs of bats: they use other signals to communicate with each other and for hunting. The researchers caught a few more bats, recorded their buzzing and compared it to that of two species of bees and two species of wasps that are common in European forests.

The sounds of bats turned out to be in many ways different from the sounds of insects - but this is if they are compared using special algorithms that take into account all acoustic parameters. However, even owls, with their excellent hearing, hear only in a certain range of frequencies. And when the researchers limited themselves to the frequencies heard by tawny owls and barn owls, it turned out that the buzzing of night bats is very similar to the buzzing of bees and wasps. Moreover, bats are especially successful in copying the hornet - a large wasp with a very painful poison.

Do owls really hear hornets in the buzzing of night bats? Several owls and barn owls were played with the sounds of bats and insects in the recording, and in both cases the birds tried to stay away from the source of the sound. On the contrary, when they heard the usual sounds of bats, the owls flew up to the speaker with interest, probably counting on prey.

According to scientists, this is an example of so-called Batesian mimicry, when someone harmless pretends to be someone dangerous - for example, when a fly imitates the black and yellow color of a wasp or when a toad pretends to be a viper. The toad, by the way, not only looks like a viper's head, but also hisses like it. Birds usually avoid dealing with wasps and bees (with the exception of certain species, such as bee-eaters and honey beetles that eat them), so it makes sense that bats imitate the buzzing of hornets. And this is so far the only example known to us when mammals decided to pretend to be insects.

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