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Spy stuff 2 or how to keep your secrets. Kolesnichenko O.V., 1997.
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This help guide provides information on how to use different types of caches. The book discusses the possible options for caches, how to create them and the tools necessary for this, describes the devices and materials for their construction. Recommendations are given for arranging caches at home, in cars, on a personal plot, etc. A special place is given to ways and methods of control and protection of information. A description of the special industrial equipment used in this case, as well as devices available for repetition by trained radio amateurs, is given. The book provides a detailed description of the work and recommendations for the installation and configuration of more than 50 devices and fixtures needed in the manufacture of caches, as well as designed to detect and protect them. The book is intended for a wide range of readers, for anyone who wishes to get acquainted with this specific area of human creation.
In a modern technology world where distance is becoming increasingly commonplace, maintaining connection and a sense of closeness is important. Recent developments in artificial skin by German scientists from Saarland University represent a new era in virtual interactions. German researchers from Saarland University have developed ultra-thin films that can transmit the sensation of touch over a distance. This cutting-edge technology provides new opportunities for virtual communication, especially for those who find themselves far from their loved ones. The ultra-thin films developed by the researchers, just 50 micrometers thick, can be integrated into textiles and worn like a second skin. These films act as sensors that recognize tactile signals from mom or dad, and as actuators that transmit these movements to the baby. Parents' touch to the fabric activates sensors that react to pressure and deform the ultra-thin film. This ... >>
Taking care of pets can often be a challenge, especially when it comes to keeping your home clean. A new interesting solution from the Petgugu Global startup has been presented, which will make life easier for cat owners and help them keep their home perfectly clean and tidy. Startup Petgugu Global has unveiled a unique cat toilet that can automatically flush feces, keeping your home clean and fresh. This innovative device is equipped with various smart sensors that monitor your pet's toilet activity and activate to automatically clean after use. The device connects to the sewer system and ensures efficient waste removal without the need for intervention from the owner. Additionally, the toilet has a large flushable storage capacity, making it ideal for multi-cat households. The Petgugu cat litter bowl is designed for use with water-soluble litters and offers a range of additional ... >>
The stereotype that women prefer "bad boys" has long been widespread. However, recent research conducted by British scientists from Monash University offers a new perspective on this issue. They looked at how women responded to men's emotional responsibility and willingness to help others. The study's findings could change our understanding of what makes men attractive to women. A study conducted by scientists from Monash University leads to new findings about men's attractiveness to women. In the experiment, women were shown photographs of men with brief stories about their behavior in various situations, including their reaction to an encounter with a homeless person. Some of the men ignored the homeless man, while others helped him, such as buying him food. A study found that men who showed empathy and kindness were more attractive to women compared to men who showed empathy and kindness. ... >>
Random news from the Archive
XNUMX volt mono amplifiers
18.01.2008
National Semiconductor offers two new 200V ICs, the LME49811 and LME49830 mono amplifiers, which can be used in the output stages of audio power amplifiers.
Devices have an extremely low level of distortion (THD + N) - no more than 0,00035% for LME49811 and 0,0006% for LME49830, save space on the board, because they allow you to abandon 25 external components, are available in 15-pin TO-247 packages , develop a power of 8 watts at an 500-ohm load.
The LME49811 provides 40 V/µs slew rate, 115 dB PSRR, 9 mA output, 100 µV output noise, is powered by a +20 to +100 V bipolar supply. The LME49830 has a slew rate of 40 V/μs, PSRR 115 dB, noise level 42 μV, output current 60 mA, supply voltage from +20 to +100 V.
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