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To put it simply: the speed of light is 300,000 kilometers per second, which is indeed very fast, but light does not require any power to reach the speed of light, and there is no acceleration process. To put it bluntly, light is "born" at the speed of light, and it must be the s
The speed of light reaches 300,000 kilometers per second. It is so fast, what is the power?
05/21
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New Horizons brings new helpers to visible stars Introduction: After the completion of New Horizons' main mission, it will become the first mission to explore Kuiper Belt objects and will become part of a longer-distance survey project heading out of the solar system . ——The New
New Horizons, which recruits amateurs to stargaze together, is it very high-end?
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"Genius is on the left, madman is on the right." "The ultimate genius is madness, and the ultimate madness is genius." Regarding this point of view, some people agree and some do not.
26 years ago, the high school student who built a "nuclear reactor" at home later died of alcoholism and poisoning
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Click to read the relevant answers. The reasons are nothing more than: high academic pressure, low employment rate, too bald to engage in scientific research in the laboratory, etc., which has led to endless voices in society "dissuading people from studying biology".
Yale Ph.D.: This major has deceived me for fifteen years, and finally I found that I made a profit
05/21
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Some time ago, the issue of electric earthworms aroused widespread attention and discussion among netizens. Electric earthworms use a machine similar to electric fish to insert two electrodes into the ground. After turning on the switch, the earthworms will automatically drill ou
After earthworms, wild scorpions are also in crisis. Scorpion catchers are searching all over to find out how harmful they are.
05/21
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There is a plot in science fiction movies where a person is frozen in ice due to an accident. When he thaws out and wakes up again hundreds of years later, he faces a completely different world than before.
The world's first frozen man took 2 years to thaw. Has he been successfully awakened?
05/21
1964
Introduction to the results: Since biomass carbon materials have rich microstructures, in order to study the synergistic effect of the microstructure and macrostructure of structural absorption materials.
Hunan University: Porous carbon materials derived from waste almond shells for use in broadband structural microwave absorbers
05/21
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Italian physicist Volta invented the battery. Italian physicist Volta. Although electric lights, telephones, refrigerators, televisions, and computers have entered people's homes, electric motors are also widely used in factories. These strong currents are drawn from generators.
"The Story of Invention" (74) - Italian physicist Volta invented the battery
05/21
1748
Although infinity is a rather illusory and abstract concept, and it is quite taboo in physics to use any definition of "infinite", it is still a very interesting question. Let's not talk about "infinitely long" ladders for now. Perhaps it is more acceptable to use "long enough".
Can we use an infinitely long ladder to leave the earth without reaching the first cosmic speed?
05/22
1711
In recent decades, with the release and strong support of domestic and foreign policies, cell therapy has achieved rapid development. Various clinical studies related to cell therapy have been carried out around the world, and cell therapy-related companies have also emerged. The
Advantages and trends of Lonza Cocoon fully enclosed automated cell therapy in the production process
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Modern science believes that our universe was born 13.8 billion years ago. 13.8 billion years ago, a singularity exploded. The singularity is an infinite mass, infinite energy, infinite heat, infinite mass, and infinite density. Large, infinitely small point. After the explosion
There is a gravitational source outside the orbit of Pluto. Scientists: It may be the legendary ninth planet
05/23
1449
When it comes to snails, the first thing that comes to mind is that they have a thick shell. In fact, in addition to being known for their thick shells, snails are also the animals with the most teeth in the world.
Snails are said to be the creatures with the most teeth in the world. So what are the uses of so many teeth?
05/23
1641
Walking people have to adjust their gait again and again to walk on curbs or steps. Whether intentionally or not, everyone has developed control strategies to control muscle activity in response to changes in the outside world, thereby protecting them from tripping. effects of ti
Two main strategies for robot gait control
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1358
The majority of overseas Chinese are very concerned about Hong Kong's continued stability, prosperity and development. Recently, Sun Dawen, a well-known Chinese scientist and academician of the European Academy of Humanities and Natural Sciences, wrote an article to express his w
[Tongxinyu] The pearl is dazzling and the bauhinia is beautiful - Chinese scientist Sun Dawen writes an article to celebrate the 25th anniversary of Hong Kong's return to the motherland.
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Got a story for July 4th? Today is also called aphelion. This day is the day when the earth is farthest from the sun. The time it takes for the earth to orbit the sun is one year. The place where the earth is closest to the sun is called perihelion. It is in early July every year
July 4th, the story you don’t know
05/23
1745
According to Global Network, in an environment of increasingly tense international situation, NASA Administrator Nelson recently made a series of remarks against China. In an interview with German media, he hyped up the "Chinese space threat theory" and bluntly stated that China
NASA exaggerates China's "military space program", and China makes it clear: the United States is seeking space hegemony
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1424
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At 1 o'clock in the morning, the bridge port was brightly lit. Five trucks loaded with fish, shrimp, crabs and shellfish entered the customs supervision area of the bridge port. In a few minutes, the background automatic verification was completed, the procedures were completed
The value of the goods is 1.6 billion! 24,000 tons of aquatic products will be exported through the Hong Kong-Zhuhai-Macao Bridge port in 2021
05/23
1398
At 3 a.m., a truck loaded with fresh fish and shrimp drove into the customs supervision area of the Zhuhai Highway Port of the Hong Kong-Zhuhai-Macao Bridge. It completed the "one-stop" smart checkpoint automatic inspection and release in a few minutes and headed for Hong Kong.
Hong Kong-Zhuhai-Macao Bridge Customs supervised 9,251 tons of aquatic products supplied to Hong Kong in the first quarter
05/23
1171
This is no ordinary farmer's market. Visiting here is like visiting a small aquarium. The fireworks here also make people linger. If you want to eat seafood, go to the market and slowly select your favorite delicacies that are well-reviewed. 1 Fishing Boats in Sai Kung, Hong Kong
Top Ten Seafood Markets – Recommended by Lonely Planet Magazine (Part 1)
05/23
1853
After the National Day, Hailing District began to gradually enter the off-season for tourism, with a significant decrease in tourists. The reporter learned at the Zhapo Farmers Market that the demand for fresh seafood in the market has dropped significantly, and the price of fres
Entering the off-season of tourism, the price of fresh seafood in Hailing Zhapo has plummeted
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The flower-tailed pepper snapper is commonly known as Iron Woman, False Bao Gong, Black Foot, and Jiao Qian because there are many black dots of different sizes scattered on the dorsal and anal fins, especially the dots on the tail fin are denser, like scattered black pepper. Hen
The fish has tender meat and high economic value. It is an excellent marine fish along the southern coast. The name of the fish is indeed strange.
05/23
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On the morning of June 29, at the Pujin Aquaculture Base of Zhongshan Food and Aquatic Products Import and Export Group Co., Ltd. in Guangdong Province, Zhongshan Customs officers were conducting pre-export supervision on live fish supplied to Hong Kong.
Over 500,000 tons of fresh aquatic products have been supplied to Hong Kong in 25 years. Why has "Zhongshan Fish" become a golden brand?
05/23
1773