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The spring itself is elastic. After being compressed, the spring will have the tendency to return to its initial state, and therefore has elastic potential energy. We can think of it as the energy stored in the overall system of the spring. So the question is Question: If a compr
Put a compressed spring into strong acid. After the spring dissolves, where does the energy of the spring go?
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Chinese people have a special emotion for the moon. Chang'e flies to the moon, the Moon Rabbit makes medicine, we are strangers in a foreign land, but we still share the beauty of the moon. The moon represents my heart. Throughout the ages, many thoughts and emotions have been pl
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Wang Jianping: One article per day: "Theory of Perception." Part 9" (105) Why is a problem a problem? Why is there a problem? Existence has existed for hundreds of millions of years. Is there something wrong with existence? Logically speaking, there is definitely no problem. If t
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In modern astronomical theory, the formation of important celestial objects such as double black holes, double neutron stars, and double white dwarfs are the result of the evolution of the shared envelope of binary stars. A few days ago, the research team of Academician Han Zhanw
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Paris, July 7, local time, France had 161,265 new confirmed patients and 89 new deaths within 24 hours, bringing the total to 149,943.
An increase of 161,000 cases! New variant of COVID-19 detected in Europe! Fuel subsidy launched in October! France plans to limit property tax increases! Pasta and meat prices are going crazy
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It might be tempting to use a cup with a green “Plant-Based” label for a cup of coffee, or see that the plastic utensils in your takeout are “100% compostable.” Some comfort. So could a plastic made from plants rather than petroleum actually melt harmlessly in the environment?
"Science" Have you ever used environmentally friendly plastics made from plants?
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One laboratory announced its new establishment. From a common sense point of view, since it has been released to the public, it must not be a small laboratory or it must be responsible for some insignificant fringe projects; since a laboratory has been established and publicly an
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The male protagonist is a physics genius. He discovered the secret of time at the age of 28 and successfully invented a time machine. He is a sure winner in life! Just when this great god was about to solemnly announce his great discovery to the world, an accident happened! Of co
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Researchers including Daohua Jiang from the Institute of Physics, Chinese Academy of Sciences, and William Catterall and Ning Zheng from the University of Washington analyzed the structure of the open-state cardiac sodium channel (NaV1.5) and analyzed its working principle (1).
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Recently, researchers such as Broad Institute of MIT and Harvard David Liu published a review in Cell to introduce the research progress in this field.
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Pictured above is Physarum polycephalum, a protist, specifically a slime mold. The term "slime mold" does not refer to a specific single group, but is a broad term referring to several types of eukaryotes that behave similarly. Regardless, they possess intelligence, although it l
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01. Nostalgia is a spaceship heading to Mars. ——Douyou 02. Since childhood, I have been taking care of the stars of all generations alone. ——Bai Helin's "Loneliness" 03. The stars should laugh, the universe is a remote place anyway. ——Pasternak 04. All my desires and contemplatio
Golden sentence#星星——All my desires and contemplations are the slowly exhaled air currents of this universe.
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Today, an insight into the vision of a once young cosmic artist shows the dust continuum and molecular lines of carbon monoxide and water seen in the pair of SPT0311-58 galaxies. (Image source: ALMA (ESO/NAOJ/NRAO)/S.
Water was discovered in ancient galaxies, which surprised astronomers. What happened?
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Text/Picture Yangcheng Evening News all-media reporter Wen Cong has completed about 700 experimental projects, filling many gaps in my country's scientific research field... Next month, the China Spallation Neutron Source (CSNS) will have been in operation for four years. With th
Filling in many scientific research gaps! The China Spallation Neutron Source will be in operation for four years丨The party flag is flying high at the grassroots level
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In fact, we are not unfamiliar with the term mycotoxins. They generally exist in grains. The detection of mycotoxins can be carried out on-site. When choosing instruments for testing, we must choose brands with good quality.
Introduction to applicable industries of mycotoxin detectors
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How should we choose testing instruments? When choosing together, we should focus on the quality of the product. Speaking of instruments, online residual chlorine analyzers have a wide range of uses. They are not only very accurate in detecting residual chlorine content, but can
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1. Houston Astros shortstop Carlos Correa (1) and second baseman Jose Altuve (27) celebrate at the World Series Championship Parade and Houston City Hall rally on November 3. 2. Fans gathered in a park near City Hall to celebrate the World Series champion Houston Astros after a
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Article | Movie Life, the film Cha Bulang is going to bring today is (one of) my favorite films, called "Moneyball", and it tells a story about choice. The director of this film is Bennett Miller, who directed "Foxcatcher", and the starring role is Brad Pitt, who was so handsome
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The Boston Red Sox took advantage of Billy's new method of "resource allocation optimization" and combined it with their own strong other resource advantages. However, because Billy did not join, they had to wait until 2 years later before the Red Sox won the 1918 championship. T
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The 2015 season for baseball fans came to an end not long ago, with sponsor revenue reaching a record $778 million. Even so, MLB's sponsorship revenue can only rank second among the four major North American leagues. In the 2014 season, the NFL's sponsorship revenue reached US$1.
MLB ranks second with annual revenue of $778 million? Sponsors of the four major North American leagues are going crazy
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Huxiu Note: Dave McClure founded 500 Startups in 2010. According to his introduction in mid-2014, almost half of 500 Startups are seed-stage VCs and half are incubators. It invests in about 250 companies every year, of which 120-150 Homes are in Mountain View (the city where Goog
How Dave McClure, founder of 500 Startups, a well-known American incubator, views entrepreneurship and venture capital
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Preface Human potential is unlimited, and technology can tap it. Chemistry, the most powerful technological weapon ever, created the miracle drug stimulants. Although it is prohibited by legislation, the sports world has to use chemical technology to fight doping. However, in add
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