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What is a lubok? Detailed answer

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Directory / Big encyclopedia. Questions for quiz and self-education

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What is a lubok?

This is printing engravings with text from wooden boards. It has been widely distributed in Russia since the end of the XNUMXth century.

Author: Mendeleev V.A.

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Latest news of science and technology, new electronics:

Solidification of bulk substances 30.04.2024

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 ... >>

Implanted brain stimulator 30.04.2024

In recent years, scientific research in the field of neurotechnology has made enormous progress, opening new horizons for the treatment of various psychiatric and neurological disorders. One of the significant achievements was the creation of the smallest implanted brain stimulator, presented by a laboratory at Rice University. Called Digitally Programmable Over-brain Therapeutic (DOT), this innovative device promises to revolutionize treatments by providing more autonomy and accessibility to patients. The implant, developed in collaboration with Motif Neurotech and clinicians, introduces an innovative approach to brain stimulation. It is powered through an external transmitter using magnetoelectric power transfer, eliminating the need for wires and large batteries typical of existing technologies. This makes the procedure less invasive and provides more opportunities to improve patients' quality of life. In addition to its use in treatment, resist ... >>

The perception of time depends on what one is looking at 29.04.2024

Research in the field of the psychology of time continues to surprise us with its results. Recent discoveries by scientists from George Mason University (USA) turned out to be quite remarkable: they discovered that what we look at can greatly influence our sense of time. During the experiment, 52 participants took a series of tests, estimating the duration of viewing various images. The results were surprising: the size and detail of the images had a significant impact on the perception of time. Larger, less cluttered scenes created the illusion of time slowing down, while smaller, busier images gave the feeling of time speeding up. Researchers suggest that visual clutter or detail overload can make it difficult to perceive the world around us, which in turn can lead to faster perception of time. Thus, it was shown that our perception of time is closely related to what we look at. Larger and smaller ... >>

Random news from the Archive

Micro PC Intel Edison 11.01.2014

Intel introduced a micro-computer called the Edison. Of course, the finished device may be different in shape, but for the presentation, Intel enclosed the baby in a case identical in size to a regular SD memory card.

The heart of Intel Edison is the Quark single-chip platform, introduced in September. In particular, the shown device was equipped with a dual-core version of Quark, operating at a frequency of 400 MHz. The computer also has Wi-Fi and Bluetooth adapters, LPDDR2 RAM and its own flash memory of an unknown amount. Edison supports multiple operating systems, although Linux was more specifically discussed. What's more, Edison already has its own app store.

As for the actual implementation in finished products, here Intel, apparently, is counting primarily on third-party companies. In particular, Intel announced a competition called "Make it Wearable" with a prize pool of $1,3 million ($500 for first place). True, in this case, the participants are not tasked with developing their devices based on Edison, but rather presenting the concept of using such devices as a whole, taking into account a wide variety of factors, from the intended purpose to the aesthetic side and security and privacy issues.

The main positioning of such PCs is the implementation of the concept of the Internet of Things and wearable electronics. At the exhibition, the company showed a small example of the use of such computers. The mannequin depicting a child was wearing clothes with an "built-in" Edison PC that received data from sensors sewn into clothes (temperature, pulse, and so on).

Depending on the state of the "child", a nearby mug, also with an integrated PC, displayed a green or red smile. In addition, the child's microcomputer could, for example, send a command to warm up a bottle of milk. Of course, this is just a single particular example.

Many other similar implementations, in principle, constitute the concept of the Internet of Things, which, according to analysts, will fill our homes in the near future.

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