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Today we're going to talk about one of the most far-reaching ideas in physics, it's called the principle of least action, and it's the idea underlying a vast amount of knowledge from Newtonian mechanics to relativity to quantum mechanics and quantum field theory. Suppose we have
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There is a famous saying in "Zhuangzi: Autumn Waters" - "If a frog in a well cannot talk to the sea, he is limited in emptiness; if a summer insect cannot talk to the ice, he is devoted to the time." This is a quatrain that does not contain any curse words. , has been passed down
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A few days ago, Mr. Li from Ruzhou, Henan Province was surprised to find a large "water monster" when he was visiting the Central Park Lake at night. Other fish have long been invisible, but it lives in the lake calmly and leisurely, crossing the bridge.
Thicker than thighs! A giant "water monster" rarely appears in Ruzhou Park Lake. What species is it? How poisonous
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While everyone is still immersed in the carnival of the 1-inch sole on the ground, scientists with space in mind have already set their sights on the largest camera in human history.
Are you still talking about 1-inch outsole? Let’s take a look at what China’s largest camera will look like in 2023
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A rare sight! British media: Half a year after the Tonga volcano erupted, Antarctica now has beautiful skies. According to the British "Guardian" report on July 15, scientists recently discovered a rare sight over Antarctica: the sky over Antarctica, which should have been dark i
Rare sight in Antarctica
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Everyone must have heard of the name "Fushou snail". Although the name is quite nice, it is actually a kind of life-breaking snail that can kill you if you eat it. After discovering its shortcomings, our country put it on the blacklist, prohibiting fasting and breeding.
Apple snails have been put on China’s blacklist, with three-digit parasite numbers. Why are Indians fine with eating them?
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Meng Zhaozhen, an outstanding member of the Communist Party of China, senior academician of the Chinese Academy of Engineering, a famous landscape architect, landscape educator, professor and doctoral supervisor at the School of Landscape Architecture of Beijing Forestry Universi
Meng Zhaozhen, senior academician of the Chinese Academy of Engineering and famous landscape architect, passed away at the age of 90
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Whenever we toss a coin in the air, we know it will come back because of gravity. Gravity is the most mysterious force in the universe, and scientists have been studying its origins for years, but now researchers are conducting a study that will change everything about our unders
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Weekly picture selection | The latest images of the universe, high temperatures in many places around the world, Bastille Day, and the super moon. The Webb Space Telescope was jointly researched and developed by NASA, the European Space Agency, and the Canadian Space Agency, and
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Did Native Americans originate from Yunnan? Whitening gene becomes evidence of migration, Japan is just a halfway stop
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In a short period of time, many cities in my country have reported the discovery of the Omicron BA.5 variant. What are the characteristics of this mutant strain? For China, are the existing prevention and control measures still effective? Dong Xiaoping, chief virology expert at t
Are existing vaccines effective against the BA.4 and BA.5 variants? Chinese disease control experts explain doubts
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The moon is the closest planet to the earth and the brightest and easiest to observe celestial body in the earth's night sky. Interestingly, because the same side of the moon always faces the earth, for those of us living on the earth, we can only observe one fixed side of the mo
The moon always faces the earth with the same side. Is it a coincidence or is there another hidden reason?
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According to foreign media reports, during the CT scan of a 40-year-old female mummy that died 2,400 years ago, scientists discovered that a three-inch-long object was stuck between the left parietal bone and the back end of the skull of the mummy. , the area was filled with rosi
How is the mummy's brain removed?
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Tiny gelatinous droplets swirl perfectly in the water - their movement stirs up a force that attracts their neighbours. When enough of them come together, this synchronized dance arranges them into precise hexagonal, ordered, repeating patterns, just like the carbon atoms that ma
Starfish embryo spins into structure like a living crystal
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On July 12, 2022, the team of Yin Yuxin from the Peking University-Tsinghua Life Sciences Joint Center and Peking University School of Basic Medicine published a research paper titled "RPA1 Controls Chromatin Architecture and Maintains Lipid Metabolic Homeostasis" online in the "
Cell sub-issue: Yin Yuxin’s team discovered a new physiological function of the single-stranded DNA binding protein RPA1 protein
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In recent years, the field of artificial intelligence (AI) has made amazing progress, and the range of tasks that can be accomplished with ease has become wider and wider. We have to admit that in many aspects, artificial intelligence has surpassed humans, such as in video games,
Think like a baby! Scientists create an artificial intelligence with "common sense"
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Because Li Ka-shing's youngest son, Li Zekai, opened a brokerage company and signed many beautiful new artists. Many people also speculated that Li Zekai was preparing to break up with Guo Jiawen.
Li Ka-shing’s most underestimated son made tens of billions in Canada at the age of 25 and is now a low-key inventor
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Speaking of Hong Kong, many people may know that many Hong Kong people have immigrated to countries such as the United Kingdom in the past year or two. In fact, Hong Kong can have dual nationality, so many Hong Kong people have dual nationality, and they can do so at any time. Th
Liu Luanxiong immigrated to the UK, Li Ka-shing’s son immigrated to Canada, and Tung Chee-hwa bluntly said he had no vision.
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Li Ka-shing (formerly the richest man in China) has a very inspiring entrepreneurial history. It took him decades to build such a huge "Li family" from scratch. The reason why Li Ka-shing is so successful has a lot to do with how he conducts himself. When he was already famous, h
Li Ka-shing’s mysterious eldest grandson is rarely exposed and is said to be the third generation successor! Liang Luoshi will also benefit
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Li Ka-shing's son Richard Li recently appeared in Thailand. On the same day, he was photographed by reporters doing charity activities with a friend. Although it was rumored that Li Zekai gave various gifts to his girlfriend before and even bought her a mansion, everyone thought
Li Ka-shing's son Li Zekai is a philanthropist and is worth more than 10 billion. He only donated US$500 and caused controversy.
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There was only one sentence on the phone: "Hey, I've been kidnapped, don't worry about me, and don't call the police." The protagonist of this story is Zhang Ziqiang, the gangster of the century. The reason why he is called the gangster of the century is because his criminal proc
What "Chasing the Dragon 2" didn't tell you: Li Ka-shing's son Li Zeju, the details of being kidnapped by Zhang Ziqiang
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Since "losing" the title of the richest Chinese man in 2014, Li Ka-shing's ranking on the rich list seems to have been unsatisfactory. Especially the younger generation thinks so.
Li Ka-shing, who is worth US$30 billion, is a "liar"? Already 850 billion have been distributed to his son
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