0:15
Recommended
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 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"
05/22
1929
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
1507
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?
05/21
1327
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
1335
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
1927
[Source: Sichuan Ecological Environment] List of recommended search keywords for Sichuan Ecological Environment: Green Pioneers, the most beautiful grassroots environmentalists, illegally purchased red pandas, traded pangolin flake products, macaques, musk, and illegally caught w
Illegal acquisition of red pandas? Sichuan announces top ten typical cases of combating crimes that damage biodiversity
05/21
1178
Our country has a vast territory and has all kinds of terrains. Among them is a kind of landscape, the cause of which scientists have not been able to figure out yet. The story starts with NASA satellites in the United States in 2014. When they passed through the sky over Inner M
American satellites have made a major discovery: There is an "Eye of the Desert" in Inner Mongolia, China! The cause is a mystery
05/21
1772
Only three scientists worldwide have received this honor. Yuan Daoxian, a professor at the School of Geographical Sciences of Southwest University, is among them. He is a famous geologist, hydrogeologist and karstologist.
There are only three in the world, and the Chinese are among them
05/21
1484
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
Relation Video
Hydropower 101...
3:13
science Relation Video
Site video recommendation
Top 15 Evil SCP Stories...
4:14:49
science Latest News
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
1252
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
1774
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
05/23
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.
05/23
1190
Site Latest News
Let's take a look at this young lady's outfit. She is wearing a black dress. The skirt is designed to be tight. The skirt is not long, and there is a big slit on her left leg. With a slit effect, this skirt also has an asymmetrical off-shoulder shape. The two looks above and belo
The young lady looks full of femininity, elegant, beautiful and charming, and her tight skirt shows off her good figure
05/23
1914
Having black and beautiful hair is what everyone pursues, and shampoo and conditioner have become essential products for nourishing hair. Brands such as Head & Shoulders Rejoice have also become popular brands for many people, and the results are really good. Recently, the author
Easier to use than Head & Shoulders! This shampoo and conditioner makes your hair wavy
05/23
1396
We know that China has been a country with vast territory and abundant resources since ancient times, and our country is full of treasures. Take rare earth resources as an example. Rare earths play a very important role. Whether in the civilian or military fields, their role is i
More important than rare earths. Without them, half of the weapons in the United States would be useless. Only my country in the world can produce them.
05/23
1766
We know that since the exchange of fire between Russia and Ukraine, the war has continued. Faced with the intervention of NATO and the United States, Russia also openly stated its position and put the Sarmat intercontinental missile on combat duty. This wave of operations really
The cost of launching a Sarmat missile is 2 billion. How much does it cost to launch a Dongfeng 41?
05/23
1231
Every day that the Russia-Ukraine conflict continues, we have the opportunity to witness new history. On July 3, Russian Defense Minister General Sergei Shoigu announced that the Russian army had completely "liberated" Lischansk, another important town in eastern Ukraine.
The situation is undergoing new changes. Russia was attacked by missiles and Ukraine lost another city.
05/23
1918
We know that after the founding of New China, our country has rarely experienced wars. Among the few battles, the experience of another naval battle was impressive, because it was the only naval battle in our country in recent years.
The 500,000 square kilometers of territory that our country risked its life to regain is now under threat again. Experts express a stern stance
05/23
1454