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Thanks to topological isolators, it was possible to combine 30 lasers into one laser with a higher power.
VCSELs are the most popular type of laser. They can be found in smartphones, computer networks or medical devices. They emit light from quantum wells or dots located between mirrors. The pits and points are extremely small, their size is measured in fractions of a micrometer. This is an advantage, on the one hand, as it enables miniaturization and high-speed operation, and on the other hand, the size limits the power of the laser. After decades of work, a solution has now been developed to increase the performance of VCSELs so that they can also be used in areas where they could not previously be used.
For decades, researchers have tried to improve the performance of vertical cavity surface emitting lasers (VCSELs) by forcing them to work in groups. They wanted to combine multiple lasers into a single one with multiplied power. Unfortunately, minimal inaccuracies in the manufacturing process resulted in this Laser worked in small independent groups whose emissions were not synchronized with each other. It was therefore not possible to find one coherent laser beam to create.
Optica has been developing a new one 5D recording technology announced, with which up to 500 TB of data can be stored on a glass platter the size of a CD. However, we will have to wait a long time for its introduction to general use.
On the night of November 18-19, 2021, some of the world's inhabitants witnessed the longest Lunar eclipse for 580 years. The entire phenomenon will last more than 6 hours, with the silver ball lingering in the deepest shadow on earth for 3 hours and 28 minutes. However, it is not a total darkness. A maximum of 97,4% of the natural satellite disk will be covered.
This is what a human cell looks like up close. The unusual picture was from the NASA recorded with the help of cryo-electron microscopy. NASA has got us used to breathtaking images from the cosmos. Edited and colored images of distant nebulae and galaxies have always caught the imagination. This time, however, the agency associated with outer space helped create an image of one of the smallest objects that surrounds us - the cells of our body
Searching for physical phenomena beyond the Standard Model often requires access to powerful tools like the Large Hadron Collider, underground detectors for neutrinos, dark matter and exotic particles. Such devices are extremely expensive to build and maintain, they take many years to manufacture, and they are scarce, resulting in long queues among scientists. Thanks to scientists from the Netherlands, this could now change. You have developed a technique to confine and examine heavy molecules under laboratory conditions.
Scientists at MIT were amazed to find that compared to other mammals, human neurons have a lower density of ion channels than one would expect. Ion channels generate the electrical impulses through which Neurons communicate. This is another amazing observation about the structure of the Brain. 
Scientists made the discovery of 35 Gravitational wave signals announced, bringing the total number of similar discoveries to 90. The results could help solve some of the universe's most complex puzzles and shed more light on its evolution and the life and death of stars.
Chang Hsu, a mathematician from Taiwan, teaches math on Pornhub. The 34-year-old's films have been seen by nearly 2 million people and he has over 7.000 subscribers. He advertises the videos with the slogan "Play intensely, learn intensively".
Chinese scientists have announced that they have kept their word given last December and improved their optical system so that it can Quantum Gaussian boson sampling on a 144x144 matrix. In doing so, they confirmed that their quantum computer had the Quantum superiority has achieved, ie it is able to perform calculations that classic computers cannot perform in a reasonable time. We have already heard of the achievement several times Quantum superiority heard. This is what Google claims in 2019, for example.