The latest video of Titanic is exposed!After 110 years, it turned like this ... | One week of technology

Welcome to technology for a week. You will see: ① the latest video of the Titanic shipwreck; ② girls in the canoe; ③ AI play football; ④ Wanli whale song; ⑤ Crab shells do battery.

HD Titanic

Deep Sea Exploration Company Oceangate Expeditions released the latest video of the Titanic shipwreck this week [1]. This video not only shows the latest appearance of the Titanic wreckage in 2022, but also the most high -definition video records at present, the original video resolution has reached 8K.

The video here is compressed, the original picture quality version see the corresponding reference reference 1 link | Oceangate Expeditions

110 years after sinking into the sea, the Titanic has been severely eroded by bacteria and seawater. The video shows the structure of the Titanic's hip, the side -side anchor, anchor chain, the first cargo cabin, and twisted. The green light spot in the video comes from the laser setting system, which can help people accurately estimate the actual size of the object in the picture. The distance between the two light spots is 10 cm. Video records increased by clarity helped people see some new details on the shipwreck, such as the logo left by the manufacturer on the side -side anchor.

HD video materials provide new reference for scientists and marine archeologists. Through video comparison, researchers can estimate the rust speed of the Titanic, identify creatures inhabited in the shipwreck, and record the details of the historical relics on the ship.

Boat Girl

In the place near Lake Rakar in western Argentina, archeologists discovered a girl buried in a canoe [2].

The woman buried in the canoe (art restoration picture) | Pérez et al.

The young woman's bone was found on the ruins of Newen Antug. Carbon 14 measured showed that she was buried here about 800-1000 years ago. The woman was between 17-25 years old and about 149 cm tall. Researchers failed to determine her cause of death. She was lying in a canoeing stretching, with traces of red paint on her head and forearm. There was a pottery on her head, and there were wood fragments and freshwater shells scattered around her body.

Located excavated locations in western Argentina | Pérez et al.

In the culture of the local Aboriginal Mapuche, this unique burial method is symbolic: people want the canoe to carry the soul of the deceased to help them reach the "world of death" smoothly.

AI kick football

This week, researchers at DeepMind have published the results of their training AI to control virtual villain kicking football in "Science-Robotics" [3].

Video: AI kick football | Siqi Liu et al.

The road to football learning in AI is divided into three stages: First, imitate the action capture data from human athletes, and learn the basic movements; then, learn single -player dribble and shot through the "trial and error" method; finally, virtual villain composition 2 Person teams, practice passing skills and other cooperative skills, and get as many scores as possible in the simple and simplified virtual competitions. After 6 weeks of operation, the effect we saw in the video.

By learning to play football, AI has completed a fairly complicated sports control challenge, but this is still far from comparable to the real world. In the next step, the research team will try to apply the same training method to robots in real world. I don’t know when the AI ​​football team can make up 11 people ...

Wanli whale song

The whale song of the humpback whale can be passed on to the distance of 8,000 kilometers through different groups.

Some biologists believe that the whale song of the humpback whale is the most complex in the animal kingdom ｜ Wikimedia Commons

The repeated, fixed sound of the whale during communication is called a whale song. The male whales in the same group usually emit the same whale songs. Their whale songs are famous and may be related to mate selection. Whale songs can also evolve through social learning and cultural communication, but the evolution process is usually very slow. However, the speed and scope of whale songs in some areas are quite amazing.

In a recent study, scientists recorded in 2016-2018 in French Polynesia (located in central South Pacific), which matched the whale song recorded in 2018 in Ecuador (located in eastern South Pacific) [4 ]. This means that in just three years, the whale song of the humpback whale spreads 8,000 kilometers on the South Pacific, and it may continue to spread to a farther place.

Crab shell battery

The leftover crab shells found a new destination -researchers made them into new environmentally friendly batteries [5].

The shrimp crab shell is rich in chitin, which is a nitrogen -containing polysaccharide material | liangbing hu

To be precise, the researchers used shell glycogen to make a new type of electrolyte and applied it to zinc batteries. The shells of chitosan were processed by chitin derived from shrimp and crab shells. The electrolyte is the medium that is responsible for transmitting ions in the battery. It is sometimes liquid or paste. Here is a gel film containing zinc ions. This shell polycanic electrolyte is not flammable, low in cost, and can be completely degraded in 5 months in the soil. At the same time, this new battery also shows superior performance and stability. After 1,000 charges, it still maintains 99.7%of the energy efficiency. In the future, researchers also hope to further develop batteries that are more friendly to the environment, and finally all components in the battery can be degraded or recycled.

references

[1] https://oceangateexpeditions.com/press

[2] https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0272833

[3] https://www.science.org/doi/10.1126/scirobotics.abo0235

[4] https://royalsocietypublishing.org/doi/10.1098/rsos.220158

[5] https://www.cell.com/matter/FullText/s2590-2385 (22) 00414-3

Author: Mai Mai, the window knocks on the rain

Edit: Window knocking rain

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