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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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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?
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If you neglect them, they will rot. Dr. Estelle Lazar, a forensic archaeologist from the University of Sydney, spoke to ABC News about your pearly whites after death.
What happens to your teeth when you die
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?
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In a new study published on November 4, 2021, a new computer model of the black hole in the M87 galaxy was created. New computer models show that the first (and only) black hole to be photographed by humans is ejecting huge streams of plasma at nearly the speed of light.
Black holes swallow objects, but part of the matter is spit out by the black hole. What is the principle?
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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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In order to meet the growing needs of semiconductor customers for large-area scanning and nanoscale metrology, Park Systems (Park Systems, hereinafter referred to as Park) has recently launched the Park NX-Hybrid WLI semiconductor machine, which can provide users with comprehensi
Park launches powerful new semiconductor tool "Park NX-Hybrid WLI"
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Some people say that the pyramid we saw is not a mausoleum at all. So what exactly is it? There are many incredible things about the structure of the pyramid. What is behind it? All the pyramids on Earth are on volcanic lines! Volcanoes are underground energy reserves! We can thi
Some people say that the pyramid is not a mausoleum at all. What is the secret behind it?
05/21
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Generally speaking, in the weightless environment of space, water should float in the air and assume a spherical shape, as shown in the picture below. However, during the Shenzhou 13 space lecture, a photo of a water cup caused some confusion. From the picture, it can be seen tha
Why doesn’t the water on the space station float out of the cup?
05/21
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⇩ ⇩ ⇩ ⇩. More biolighting information can be found in the biolighting demonstration area in Hall 4.2, Area 4.2 of GILE2022A. Click on the "link" to get exhibition tickets.
GILE2022 | Authoritative celebrities give heavy support to explore new trends in bio-lighting
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I wonder if you have noticed a special-looking plant when you often go to the river in summer. There is a wetland park near my home. In the summer, I will go to the wetland park with my family. When passing by a place with water, I can see a plant that looks like a sausage, becau
Cattail: looks like a "sausage" and is common near water. It has many values and is full of treasures.
05/23
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The World Meteorological Organization stipulates that when a certain climate element(s) reaches a return rate of 25 years, it is called an extreme climate. Extreme climates include droughts, floods, high-temperature heat waves, and low-temperature cold damage. As pollution become
Abnormal weather will occur in many places in 2022! Are Hawking's climate predictions credible? Analysis: Be wary of extremes
05/23
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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
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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
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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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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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At the NATO Madrid Summit, Japanese Prime Minister Fumio Kishida and South Korean President Yoon Seok-yue also attended for the first time. Moreover, Biden also convened a tripartite meeting between the United States, Japan and South Korea.
For four awkward minutes, Japan and South Korea really faced each other like this
05/23
1634
Nowadays, more and more people are paying attention to their health. In order to improve their physical fitness, many people insist on exercising. Exercise can not only strengthen the body, but also improve the body's immunity and prevent diseases and even cancer.
Does running for 40 minutes a day delay aging or accelerate it?
05/23
1880
01 There was a young monk practicing in a monastery. While he was familiar with the scriptures, he often thought about matters of life and death. One day he saw a problem and couldn't figure it out, so he asked his master: "If one day, one step forward will lead to death, and one
4 short stories, the stories are short but the truth is profound
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The leader of a blind date group in Wuhan tells real events around him. There is always a reason for being single. Follow me and I will show you clearly the various aspects of life in relationships. I have been dating my boyfriend for 4 years. From the age of 25 to 29, I have bee
29-year-old leftover woman: Is it normal for my boyfriend to secretly buy bags and send red envelopes to others?
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Diamond is a standardized product, and its value is determined by its grade: diamond carat weight, color, clarity, cut 4C grade and fluorescence grade. Only diamonds that have undergone strict 4C grade and fluorescence grade evaluation can know its true value;
Diamond grading standards, detailed explanation of diamond grade comparison table pictures
05/23
1195
When people visit various jewelry stores, they will find that there are many kinds of diamond rings of different sizes and styles on the market, and these diamond rings will also have different price tags. So, among these many diamond rings, how big is a 1-carat diamond ring?
How big is a 1 carat diamond ring? Approximately at what price? has no meaning?
05/23
1854