Nonlinearity of quantum dot waveguide helps entangle photons

European physicists have studied in detail the interaction of single photons in a photonic crystal waveguide containing a quantum dot. They showed that by varying the duration of the pulses and their delay, it is possible to achieve varying degrees of nonlinearity, as well as control the degree of correlation of light quanta. The study… Continue reading Nonlinearity of quantum dot waveguide helps entangle photons

Physicists have reproduced the chirping effect at the Kukulcan Pyramid

Colombian physicists have reproduced the unusual acoustic effect observed at the Temple of Kukulcan, located on the Yucatan Peninsula in Mexico. The echo of hand clapping at the base of the pyramid resembles the chirping or chirping of a bird. Simulations showed that this effect occurs due to the addition of many waves reflected from… Continue reading Physicists have reproduced the chirping effect at the Kukulcan Pyramid

The genome of the “immortal” jellyfish has been sequenced

Spanish scientists have compiled a list of genes that are likely responsible for the “immortality” of the jellyfish Turritopsis dohrnii. To do this, they sequenced its genome and compared it with the genome of a jellyfish. Turritopsis rubra. It turned out that the “immortal” jellyfish, unlike its relative, acquired additional copies – up to eight… Continue reading The genome of the “immortal” jellyfish has been sequenced

Chinese scientists have deprived mice of a chromosome. And then another one

Chinese scientists have tested a new method of genome engineering: they have learned to stitch mouse chromosomes together. It turned out that if the chromosomes are not very large, then it is easy to glue them together and get a mouse with an odd number of chromosomes. Such animals can grow up healthy and fertile… Continue reading Chinese scientists have deprived mice of a chromosome. And then another one

Physicists simulated militant Redditors with GameStop shares

European physicists used a large amount of data from the r/wallstreetbets subreddit, as well as the dynamics of securities prices, to understand the mechanisms of self-organization of a large number of people using the example of the scandal surrounding the unexpected rise of GameStop shares. The mathematical model they developed of a voter under the… Continue reading Physicists simulated militant Redditors with GameStop shares

A screen and automatic height adjustment were built into the desktop

Lumina has introduced a table with a built-in screen and wireless chargers. The screen allows you to display widgets in addition to your computer monitor, such as a calendar or Twitter feed. The table also has motors that change its height: manually at the user’s request or automatically so that he does not sit in… Continue reading A screen and automatic height adjustment were built into the desktop

Due to global warming, viviparous lizards began to age before birth

Zoologists have discovered that heat stress associated with global warming shortens telomeres in female viviparous lizards that inhabit the mountains of southern France. As a result, their young are also born with shorter telomeres, which reduces their survival rate and ultimately leads to the extinction of entire populations. As noted in the magazine article Proceedings… Continue reading Due to global warming, viviparous lizards began to age before birth

Japanese moths have grown rods to attract pollinators

Inflorescences of the same cover Arisaema (thunbergii) urashima end in long filamentous processes. Japanese botanists have found that these unusual structures attract the main pollinators of these plants – fungus gnats of the genus Mycetophila. However, the specific mechanism remains unknown. The research results were published in a journal article Ecology. Most flowering plants attract… Continue reading Japanese moths have grown rods to attract pollinators

Oil drilling in Iran ends with the discovery of an ancient necropolis

While drilling for oil wells in southwestern Iran, an ancient necropolis was accidentally discovered, which included tombs with huge funeral urns. It seems that this burial complex dates back to the times of the Parthian kingdom (3rd century BC – 3rd century AD), when burials were carried out by followers of Mithraism. This was reported… Continue reading Oil drilling in Iran ends with the discovery of an ancient necropolis

Treasure of gold Roman aures was buried in Britain before the Roman conquest

British archaeologist Adrian Marsden reported the results of a study of a treasure found several years ago in Norfolk. The most valuable finds were ten Roman gold coins – aures, minted during the reign of Octavian Augustus. The researcher believes that the treasure was buried at the beginning of the first century AD, a couple… Continue reading Treasure of gold Roman aures was buried in Britain before the Roman conquest