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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

Sports retirees are less likely to die from heart attacks 08.09.2016

Even moderate physical activity in people over 65 years of age is associated with a more than two-fold reduction in the chance of dying from a cardiovascular disease (CVD), scientists from Finland said.

The role of physical activity in preventing CVD in pre-retirement adults is well established. But less is known about the impact of regular physical activity on the risk of CVD in older patients.

In the work of scientists studied the relationship between outdoor activities, CVD and mortality in people aged 65-74 years. The FINRISK study ran from 1997 to 2007 and included 2456 men and women. The scientists continued to follow the participants until the end of 2013.

The authors of the study collected data based on a self-questionnaire of study participants, who recorded information about physical activity and other active forms of recreation, clinical parameters (pressure, weight and height) and laboratory parameters such as cholesterol levels. Deaths were taken from the National Register of Causes of Death, and causes of death from CVD and heart attacks were determined from the National Register of Hospital Discharges.

Physical activity from the reports of study participants, scientists divided into three types:

- low: reading, watching TV or housework without physical activity;
- medium: walking, cycling or fishing, gardening, hunting - at least four hours a week;
- high: recreation and sports such as running, jogging, skating, gymnastics, swimming, ball games, intensive gardening or intensive training, sports competitions - at least three hours a week.

On average, over a follow-up period of 11,8 years, 197 participants died of heart disease and 416 had any incident related to CVD.

The scientists then set out to find a link between physical activity and observational results. To do this, they included other heart risk factors - blood pressure, smoking and cholesterol - and social factors (marital status and education). To minimize reverse causality - i.e. when deterioration in health led to a decrease in physical activity, patients with coronary heart disease, heart failure, or stroke that occurred before the start of the study were excluded from the analysis.

It turned out that moderate and vigorous physical activity is associated with a reduction in the risk of acute cardiovascular events by 31% and 45%, respectively. At the same time, mortality was lower by 54% and 66%.

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