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science 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 One of the most influential ideas in physics: the principle of least action 07/02 1827
science ξ AO Ming Zhang, Did Native Americans originate from Yunnan? Whitening gene becomes evidence of migration, Japan is just a halfway stop 07/03 1070
science As of June 30, 2021, the company had 1,735 employees, including 891 R&D personnel, accounting for 51.35% of the total employees; Rongchang Biological Research Report: Innovation leads to prosperity, internationalization opens up the sea of stars 07/03 1686
science 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 07/03 1282
science 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 Weekly Picture Selection (7.9-7.15) 07/03 1544
science According to official Weibo news, Meng Zhaozhen, an outstanding member of the Communist Party of China, a senior academician of the Chinese Academy of Engineering, a famous landscape architect, landscape educator, professor and doctoral supervisor at the School of Landscape Archi Meng Zhaozhen, academician of the Chinese Academy of Engineering, passed away at the age of 90 07/03 1438
science Since June 13, the weather has become hotter and hotter, reaching high temperatures above 40 in many places. The high temperatures are wide-ranging, extreme and last for a long time, affecting more than 900 million people, and severe heat waves have occurred in many places. Radia Why is it so much hotter this year than before? 07/03 1373
science The famous scientist Einstein proposed many scientific hypotheses during his lifetime. Among them, the hypothesis about black holes was questioned by countless people at that time when astronomical technology was not yet developed. However, with the successful shooting of black h Do wormholes really exist? "Faster" than the speed of light, can you reach the edge of the universe in an instant through it? 07/02 1839
science Since humans successfully landed on the moon in the last century, space exploration has gradually become possible. Even when the earth is no longer habitable or more space resources are needed, humans must be prepared to move to space or aliens. Space technology has developed rap Japanese team researches original artificial gravity facility in outer space to prepare for future colonization of alien planets 07/03 1803
science Extreme weather has occurred frequently in recent years. This year, India experienced the highest summer temperature ever recorded, and many countries also experienced rare droughts and floods. In recent years, the general feeling is that extreme weather has become more and more Frequent extreme weather: Meteorological weapons may have been put into actual combat! Its power far exceeds that of nuclear bombs 07/02 1228
science 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? 07/05 1763
science 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? 07/05 1535
science 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 07/05 1018
science 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 07/04 1099
science 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" 07/04 1851
science The Omicron subclade BA.5 is becoming a major epidemic strain around the world and has caused a cluster of epidemics in my country. Since July 5, BA.5 has been detected in Xi'an, Beijing, Tianjin, Shanghai and other places. How pathogenic is it? Are vaccines effective? Will the virus still mutate...Five Questions from Omicron BA.5 07/04 1311
science The epidemic situation in Hong Kong continues to rebound. The Hong Kong Center for Health Protection announced that there were 3,762 more confirmed cases today, exceeding 3,000 for the fourth consecutive day, of which 3,555 were local infections. The rebound of the epidemic in Hong Kong has reached a new high, with the number of cases exceeding 3,000 for four consecutive days, and more than 2,000 buildings "fallen" 07/05 1562
science The train suddenly stopped at a strange station. At a very small platform, a few old people building roads inserted their shovels into the soil, smiling and guessing at the people on the bus. This kind of speculation gives these people who live in the mountains all year round som At this moment, I am silent 07/05 1196
science The past days are like light smoke that disperses with a gentle breeze, invisible and intangible. Some people, some things, and some memories remain in my heart, and they will emerge at an inadvertent moment. Today, I tidied up my room and found many old photos and many old objec Original||Look forward and love life 07/05 1963
science Many people know Guanyin Bodhisattva, but they don’t know the story of Gyps’ Enlightenment. Today happens to be Gyps’ Enlightenment Day, so let’s tell you the little-known story about Gyps. Which legend have you heard about the day when Guanyin Bodhisattva became enlightened? 07/05 1302
science Introduction: I came across a jade-embellished succulent in front of a house. It was so spectacular! How spectacular can rich people raise a lot of meat? How spectacular can they be? Most people have the impression that they are planted in one piece of land. In fact, the most spe I came across a house with jade and succulent ornaments at the door. It was so spectacular! Rich people are rich if they raise more meat. 07/05 1216
science Missing someone does not require any words, but it requires the courage to bear the sorrow of separation. If you hold hands, there will be no separation, and there will be no more sentimental thoughts! The love I met so late, I have endless attachment in my heart; I miss you, you are my forever lover 07/05 1644