Astronomer Frank Drake dies

On Friday, September 2, 2022, at the age of 93, American astronomer Frank Drake, who became one of the pioneers of the search for radio signals from extraterrestrial civilizations, died. He is also one of the creators of the records for the Pioneer and Voyager probes and the Arecibo radio message, according to the SETI… Continue reading Astronomer Frank Drake dies

Spectrometer based on LEGO constructor will make studying physics cheaper

German physics teachers made a universal spectrometer in the Czerny-Turner scheme using LEGO constructors and scrap materials. The authors showed that it can be used to study the spectra of atomic emission, transmission, reflection and fluorescence. Reconfiguring the device for different tasks takes a few minutes, and the total cost of the device does not… Continue reading Spectrometer based on LEGO constructor will make studying physics cheaper

Superfluorescence on single nanoparticles was obtained at room temperature

American physicists were able to induce anti-Stokes superfluorescence of one or several lanthanide-doped nanoparticles at room temperature. The rate of collective emission of ions turned out to be four orders of magnitude greater than ordinary luminescence. This research opens the way to the use of single nanoparticles in the creation of optical processors. The study… Continue reading Superfluorescence on single nanoparticles was obtained at room temperature

Archaeologists found a birch bark letter in Staraya Russa with a request to buy deer mittens

Archaeologists reported the results of excavations in Staraya Russa. This season they managed to discover the oldest city necropolis, dating back to the 11th – early 12th centuries, as well as two birch bark letters. In the text of the 54th letter, the author is a certain Donkey. Perhaps this is a version of a… Continue reading Archaeologists found a birch bark letter in Staraya Russa with a request to buy deer mittens

Oxytocin caused dogs to cry when reunited with their owner after separation

Japanese researchers have found that dogs cry when reunited with their owners after separation. This is due to an increase in oxytocin concentrations. The study was published in Current Biology. Dogs were domesticated and, through convergent evolution, learned to communicate with people through eye contact. For dogs, it plays a key role in the formation… Continue reading Oxytocin caused dogs to cry when reunited with their owner after separation

Electrical brain stimulation improves memory in older adults

American neurophysiologists have discovered that transcranial electrical stimulation of the brain helps improve short- and long-term memory. To do this, elderly participants in the experiment were stimulated with alternating current for 20 minutes for four days in a row. Memory improvements after therapy persisted in the subjects for one month. The study was published in… Continue reading Electrical brain stimulation improves memory in older adults

Russian schoolchildren won three gold medals at the International Olympiad in Informatics

The 34th International Olympiad in Informatics ended in Indonesia, as a result of which Russian schoolchildren won three gold and one silver medals. In the unofficial ranking, only participants from China and Japan, who received four top awards, were higher, according to a press release from the Ministry of Education. The International Olympiad in Informatics… Continue reading Russian schoolchildren won three gold medals at the International Olympiad in Informatics

Nepenthes has adapted to use the energy of falling raindrops to capture victims

One species of Nepenthes, a carnivorous plant common in the jungle, has evolved a mechanism that allows it to use the energy of raindrops for hunting. A drop of water falls on the leaf-cover of the plant and sends the insect sitting on it straight into the trap. However, it turned out that the mechanism… Continue reading Nepenthes has adapted to use the energy of falling raindrops to capture victims

Vitamin D did not reduce the risk of fractures in adults

A randomized, five-year study of nearly 26,000 people found that taking 2,000 international units of vitamin D3 daily did not reduce the risk of fractures in healthy American adults compared with taking a placebo. As reported in the article, published V The New England Journal of Medicinewhen adjusted for age, sex, race, body mass index,… Continue reading Vitamin D did not reduce the risk of fractures in adults

Archaeologists found a gold seal and five birch bark letters mentioning caviar and salmon in Novgorod

Archaeologists reported new finds made on the territory of Novgorod. Among them were 28 silver coins of the 15th century, several seals of the Council of Lords, the Thousand and Ladoga lord governors, as well as a gold applied seal with a carved inscription “Panfilyev’s Seal”. In addition, the scientists had at their disposal five… Continue reading Archaeologists found a gold seal and five birch bark letters mentioning caviar and salmon in Novgorod