Archaeologists have discovered in Norway the shaft of a medieval arrow, the broken shank of which was repaired by a hunter using sinew. However, apparently, then he was unsuccessful again and his shot missed the target, burying the arrow for several centuries under snow and ice. As the Secrets of the Ice project team reports… Continue reading In Norway, a repaired arrow from an unlucky hunter was found that had melted from under the ice.
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
Police in the Indian city of Vadodara have detained two young men for trying to cheat their way into a local railway exam by using a fingerprint. One of the students cut the skin off his finger and gave it to a friend so that he could fool the biometrics system, NDTV reported. In 1877,… Continue reading Indian student tried to use friend's skin for biometric authentication
Physiologists and anthropologists have analyzed how metabolic rate changes while chewing gum. It turned out that it increases metabolism by 10-15 percent. Extrapolating their results to the average duration of chewing per day in different great apes, the authors found that the proportion of energy expenditure for chewing in humans became approximately five times less… Continue reading Switching to cooked food helped people spend five times less energy chewing
The relationship between pain relief and activity in choosing music was shown in natural conditions – previously this statistical relationship was tested only in laboratory experiments. The authors of the article published in PLoS One, conducted an experiment with 286 adults who rated how the intensity and unpleasantness of pain changed after listening to a… Continue reading Music choice was associated with decreased pain intensity
European physicists have figured out how to make a turbid scattering medium completely transparent to waves by installing a specially designed anti-reflection layer in front of it. They demonstrated the performance of the method numerically and experimentally using radio waves. The study was published in Nature. The opacity of objects can be due to various… Continue reading Anti-reflection layer made the cloudy environment transparent
Underwater archaeologists have conducted new research at the site of the Antikythera shipwreck. After moving the stone blocks, they discovered the marble base of the statue, fragments of a ship, two human teeth, and a marble head, which apparently represents the missing part of a previously found sculpture of Hercules. This was reported in a… Continue reading Marble head of Hercules discovered at Antikythera shipwreck
The Perseverance rover found an unusual shiny object in one of the rocks – it turned out to be a piece of thermal insulation that was part of the braking system that landed the rover on the planet last year. It is still unclear how exactly the fragment got here, reported on NASA's Twitter. To… Continue reading Perseverance found a piece of thermal insulation on Mars
Archaeologists spoke about new finds made during excavations at the Sanxingdui monument. In the sacrificial pits they discovered a large number of artifacts, including bronze masks, phoenixes and a box with handles in the shape of a dragon's head. Among the finds, a sculpture with the body of a snake and a human head stands… Continue reading A bronze statue of a half-man, half-snake was discovered in the sacrificial pit of Sanxingdui.
Archaeologists presented the results of a study of two rare metal rings that were found near Anapa during excavations of the Usatov Balka-3 monument. One of them depicted a racing chariot with a driver driving two horses, the other depicted a Celtic warrior with a shield, swinging a sword. The finds date back to the… Continue reading Archaeologists have found a rare ring with a Celtic warrior with a shield near Anapa