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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

PWM stabilizer with sequencer and auto-tracking 28.07.2008

ON Semiconductor has introduced the NCP312x family of two-terminal pulse-width buck regulators that provide auto-tracking and sequencing capabilities.

Based on integrated MOSFETs providing 2 A (NCP3120, NCP3122) or 3 A (NCP3121, NCP3123) output current with switching frequencies up to 2,2 MHz, these components are suitable for use in a variety of systems. Auto-tracking and sequencing capabilities make precise timing and control of both output channels possible.

A digital signal processor or a user-programmable logic array requires versatile power supplies that deliver different levels of current with specific timing for each. This timing prevents non-operating conditions that could cause the system to fail in a working environment.

The NCP312x range provides programmable gain detection, serial control, and distortion control to control voltage behavior during start-up and shutdown. In addition, multiple components in the NCP312x range can be daisy-chained to drive a multi-channel output. This family of converters reduces input capacitance requirements by switching 180° on phase misalignment from 200 kHz to 2,2 MHz. This common-mode operation allows a single inexpensive electrolytic or ceramic capacitor to be used for the input filter instead of two capacitors in the standard configuration.

The outputs can also be paralleled, which provides for the installation of one two-phase regulator with low ripple voltage. Models NCP3120, NCP3121, NCP3122 and NCP3123 are available in QFN-32 packages.

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