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Spectacular tricks and their clues

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

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Latest news of science and technology, new electronics:

Blinking of the magician and his audience 19.05.2024

Magic and illusions have always captured the attention of the public, but what happens behind the scenes of the magician and in the brains of his audience? Scientists from the UK decided to solve this mystery by conducting a new study involving ten illusionists of varying experience. Illusionists, some of whom had been practicing magic for more than half a century, others for only six months, were invited to demonstrate the same trick - the popular coin trick. Recordings of their performances during training and on stage showed that each of them began to blink significantly more often at the moment of performing the trick. The study's findings indicate that magicians' blink rate may be related to unconscious aspects of their performance. At the same time, as scientists have found, spectators also begin to blink more often, following the movements of the illusionist. This observation supports the idea that magicians may be catalysts for blinking in audiences. Additional research has shown that magicians blink more often during ... >>

Ultrasonic coffee machine 19.05.2024

Iced coffee has become an integral part of coffee culture in recent years. Therefore, engineers from the University of New South Wales decided to improve its preparation. They have developed an ultrasonic coffee machine that reduces the cold brew time for ground coffee beans from 12-24 hours to significantly less time. Iced coffee, or "Cold brew", is popular due to its smoothness, low acidity and low bitterness. It is prepared by steeping ground coffee in cold water for a long time. Unlike traditional hot brewing, which often imparts bitterness to coffee, cold brewing extracts more delicate and complex flavors from the coffee beans. The innovative system, presented by a team of engineers, introduces ultrasonic technology into the coffee preparation process. The system uses ultrasonic waves to speed up the process of extracting oils, flavor and aroma from ground coffee. This allows you to significantly reduce the time ... >>

The speech of sperm whales is similar to that of humans 18.05.2024

In the world of the ocean, where the mysterious and unknown coexists with the studied, sperm whales, with their huge brains, are of particular interest to science. Researchers, working with a huge array of audio recordings collected during the Dominica Sperm Whale Project (DSWP) - more than 8000 recordings, seek to unravel the secrets of their communication and understand the structure and complexity of the language of these mysterious creatures. By studying in detail the recordings of 60 sperm whales in the eastern Caribbean, scientists have revealed surprising features of their communication, revealing the complexity of their language. "Our observations indicate that these whales have a highly developed combinatorial communication system, including rubato and ornaments, which indicates their ability to quickly adapt and vary during communication. Despite significant differences in evolution, sperm whales have elements in their communication that are characteristic of human communication," says Shane Gero, a biologist at Carleton University and director of the CETI project. Issl ... >>

Random news from the Archive

Portable atomic clock 31.01.2022

The Defense Advanced Research Projects Agency (DARPA) of the US Department of Defense announced the search for partners to create a portable optical atomic clock. They will have to be a hundred times better than today's most accurate portable watches.

Today, atomic clocks are the most accurate way to measure time. Their principle of operation is based on the fact that each atom can emit and absorb photons only with certain frequencies - resonant for it. Atomic clocks are microwave and optical. The former are used, among other things, in GPS satellites, the data of which the military uses in many operations. The microwave atomic clock is based on a microwave resonator tuned to the transition frequency in the atom. They allow you to measure time in seconds with an accuracy of 16 decimal places. Their accuracy is limited by the ability to measure and control deviations of tens of microhertz in the desired resonant frequency.

Optical atomic clocks use transitions in atoms as a standard, leading to the appearance of photons with a frequency in the optical range. Their resonant frequency is sometimes 100 times greater than that of their microwave predecessors. This makes it possible to achieve greater stability and reduce the relative statistical error in determining the time by a hundred times, that is, up to 10 to the minus 18 degree.

But in terms of size, optical atomic clocks today usually require a separate room in laboratories. In addition, these are very complex devices, and scientists correct their work.

The military is interested in two types of prototypes for different types of missions. The first watch must weigh less than five kilograms, consume less than 25 watts of power, operate autonomously for 10 days, and be resistant to changes in speed, vibration and temperature. The latter condition is necessary so that they can operate on air and space platforms such as tactical aircraft and satellites. The device must be a hundred times more accurate than the most accurate portable watch.

The second watch must weigh less than 200 kilograms and consume less than 400 watts. They are intended for more stable platforms, such as ships or land bases. They are expected to be able to go without manual adjustments for one month.

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