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60 diagrams of amateur radio devices. Drobnitsa N.A., 1988
I All-Union Olympiad for Schoolchildren in Informatics
III scientific and technical conference of schoolchildren in MIPT
XI tournament of young physicists
XIV All-Russian Olympiad for schoolchildren
XXII All-Union Olympiad in Mathematics
XXII All-Union Physics Olympiad
A.N. Kolmogorov in the memoirs of students
Absolute temperature
TV circuit breaker
Automatic non-contact switching device
Active probe for oscilloscope
Alexander Alexandrovich Fridman (on the occasion of his 100th birthday)
Archimedean force in literary works
The safety of electrical work at height. Kornilovich O.P., 1988
Conversation with Academician V.P. Maslov
Household video recorders (according to foreign sources)
At the beginning of the journey
What is the focus?
Eight-band stereo equalizer
Universe as a heat engine
All-Union Correspondence Physics and Mathematics Olympiad of Moscow State Technical University named after N.E. Bauman
All-Union Competition Young Programmer
Selection of equipment, protections and cables in 0,4 kV networks. Belyaev A.V., 1988
Output stages of a wideband oscilloscope
Harmonic vibrations
Heinrich Hertz and electromagnetic waves
paper sheet geometry
Geometry of lucky tickets
Geometry of Equations
heterodyne reception
thermometer for the sun
light pressure
Two transistor testers
Two generalizations of classical formulas
PAL coded decoder
ten digits
Once again about the multifunctional lighting effects machine
Rigidity of convex polyhedra
Liquid nitrogen and copper nut
Problems of the LI Moscow City Mathematical Olympiad
Problems M1081-1085, F1093-1097 and solving problems M1061-1063, F1073-1077
Problems M1086-1090, F1098-1102 and solving problems M1066-1069, F1078-1082
Problems M1091-1095, F1103-1107 and solving problems M1070, M1072-1075, F1084-1087
Problems M1096-1100, F1108-1112 and solving problems M1071, M1076-1080, F1088-1092
Problems M1101-1105, F1113-1117 and solving problems M1081-1085, F1093-1096
Problems M1106-1110, F1118-1122 and solving problems M1086-1090, F1097-1102
Problems M1111-1115, F1123-1127 and solving problems M1091-1095, F1103-1107
Tasks M1116-1120, F1128-1132 and solving problems M1096-1098, M1100, F1108-1112
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Latest news of science and technology, new electronics:
Artificial leather for touch emulation
15.04.2024
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 ... >>
Petgugu Global cat litter
15.04.2024
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 attractiveness of caring men
14.04.2024
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 Slim Full HD display from LG
17.07.2013
LG has unveiled the world's thinnest Full HD premium smartphone LCD display using One Glass Solution (OGS) technology. This technology involves the combination of protective glass and display elements into a single whole, which has a positive effect on the final thickness of the product.
The display diagonal is 5,2 inches. According to the developers, one of the advantages of the display are excellent viewing angles. However, the main feature is its size. The thickness of the new display is 2,2mm and the bezel size is 2,3mm.
The display received a resolution of 1920 x 1080 pixels, each of which consists of red, green and blue (RGB) subpixels. The brightness is 535 cd/m2. OGS technology allows you to increase the viewing angles of the display and improves readability in bright sunlight.
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Interesting materials of the Free Technical Library:
▪ section of the site Lecture notes, cheat sheets. Selection of articles
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▪ article Whose cubs during childbirth fall to the ground from a height of two meters? Detailed answer
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▪ article Standards for testing electrical equipment and devices for electrical installations of consumers. Test rectified voltage of power cables. Encyclopedia of radio electronics and electrical engineering
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