1, why is the sky be blue?
The sky we see is often a blue, especially after a heavy rain, the sky is even more blue, and the heart is refreshing, and it is easy to fly. Why is the sky be a blue?
The atmosphere itself is colorless. The blue sky is a picture of atmospheric molecules, ice crystals, water droplets, etc. and sunshine.
When the sun enters the atmosphere, the wavelength is longer, such as red light, the transmission is large, can be transmitted to the ground through the atmosphere; while the wavelength short purple, blue, cyan light, when the atmospheric molecule, ice crystal, water droplets, etc. It is easy to scatter. The scattered purple, blue, and the cyan is full of sky, so that the sky shows a blue.
2. Inventor of paper
Cai Lun is the most great inventor in our country, the inventors of papermaking. Before without inventive paper, the people of the ancient people have tried to do their best, using stones, bricks, leaves, bark, wax, copper, lead, burlap and animal skin, sheepskin, etc., text record.
When my country Champia, people carried the text on the shoulder blades of the animals such as turtle and cattle, sheep, and pigs; then, people use the wood chips (also known as signs) and bamboo slices (also known as.) Come to write articles; in the future, it is also useful for silk fabric to write a way. During the Eastern Han Dynasty, with the development of economic and cultural, bamboo slip, and 缣 缣 increasingly uncomfortable need. In order to make a more ideal writing material, Cai Lun uses bark, sputum, loose, scrap fish net, successfully created a light, economical paper. Summarize a relatively complete papermaking method, making the paper technology have a good progress. In 1055, Cai Lun will dedicate the paper to the court and is praised by the emperor. Since then, people use this paper and is known as Cai Long's paper in the country as "Cai Yu paper".
In 121 AD, the struggle of the inheritance of the Eastern Han Dynasty was involved in Cai Lun, and the Han Dynasty ordered him to invest. Cai Lun is ashamed of being tried, that is, toileate, replace the most beautiful clothes, and then take the poison.
In the 8th century, my country has widely used paper. In this century, my country has exported paper to all parts of Asia, and strictly protects paper secrets. In 751 AD, the Tang Dynasty and the Arab Empire had conflicts, and the Arabs captured several Chinese papermons. Not long, the papermaking industry raised in Samarkand and Baghdad. In this way, the papermaking technology gradually spread all over the Arab world, where paper is widely used, and then passed through the Arab countries to North America and Europe. According to historial records, in the case of the introduction of paper in Cai Lun, Europe has established the first paper mill. Although the modern paper industry has been developed, the basic principle is still the same as the method of Cai Lun paper. The papermaking raw materials have been replaced by wood pulp, but the high-grade printed paper, roll paper, rice paper and typing wax paper, etc., there is still a raw material such as a loose, bark, spad, scrap fish net, etc.
Cai Lun's impact on my country and even human social development is huge, and this effect will continue. Today, we are unable to use quantities to measure the role of paper on historical development. Human's use will continue until the year, but it is difficult to predict. Therefore, Cai Lun (another inventor of the four major inventors, Bi Sheng) occupied the list of people in the character list of huge impact on China and human history processes.
3, Tarot
The Tarot has emerged in the 15th century, which is very popular in the Western world, which is not only available for playing cards, but also widely used to divide the breakthrough, psychotherapy. A complete Tarot is 78.
4, the underwater mobilization Nimo dubbing
Nemo: The small protagonist in the film is a yellow with striped clownfish, and it is stubborn and tenacious. English original edition dubbing actor is Alexander Gould, is a newcomer. Chinese dubbing actor unknown ... I only know that Zhang Gui will make the old Dad, the old father of the small fish nomo, Xu Faili decorated Chinese nice friends, blue emperor fish Dolly. At the same time, the famous singer Sun Nan also served as the Chinese theme song. 5, the nearest planet
Moon (Moon) is the nearest planet from us (Earth). It is about 400,000 kilometers from the earth. Since the moon is surrounded by the earth, it is an elliptical orbit, so the moon is the most than 50,000 kilometers more than the last time. Also full moon, the moon is mostly more than 14%, the moon is 14%, and the view area is 30%.
The nearest planet with the earth is Mars, the nearest star is the sun.
6, the invention of dumplings
Dumplings are traditional foods like our people. Its method is to make a thin and soft dumpling skin with flour, and then cut with fresh meat, cabbage, mix with seasonal as a stuffing, and cook the dumplings and float. It is characterized by a thin stuffing, delicious, unique in shape, and eating.
The original name "delicate ear" is the first invented in my country.
7, sun temperature
Surface temperature: about 5500 degrees Celsius
Center temperature: about 20 million degrees Celsius
Risk layer temperature: about 5 × 106 degrees Celsius
8, Ruper. Where is Wenke
The novel "Rip Van Winkle" is a name for American novelists and historic Washington, Washington Irving, 1783-1859.
The story is: One day Rapu, Wenke, in the mountains, in the mountains, the shape of the weird old man carrying the wine barrel. He took Rupp to the extremely deep mountain gorge, came to a semi-circular mountain, saw a group of strange people, not angry, playing Jiu Gui ball. These people saw the old man with Li Bai, stopping the game. After drinking the wine brought, start the game. Ruper couldn't help but secretly tasted a drink when he didn't see it, and he felt that the wine was overflowing, so he had a few mouthfuls. Finally, I fell to my head, two eyes, I fell asleep. One sleep is twenty years. After waking up, I returned to my own village and found that there was no acquaintance in the village. Even the wife he was afraid of also left people.
9, the world's bird runs the fastest bird
The fastest bird: ostrich, 72 km / h.
10, the highest sound singer
"The Big World Kinis" is known as the "Luxe Singing" of the world "the highest voice, the widest", the highest singing, and the highest singing ", she can easily sing, the sound is pure, the sound, the macro, bright, the sound is pure, macro, bright," Beautiful, walled four walls.
"Pavarot sing on the first floor, sing in the third floor" When she was recorded for "China - You is my theme song" in a studio of Beijing, she sang 50,000 yuan of microphone on the spot. This song is identified by experts: upstream treble reaches 4400 Hz to C5 - equivalent to the rightmost of the piano, downstream to 77.5Hz is BE, the zone is 5 8 degrees with a 6 degree, the treble reaches 4150 Hz (C5). To this end, Lu Lanqing won the "highest voice, the widest, and the highest actor" certificate issued by the Heiren Headquarters of Shanghai World. Lu Lanqing has become the highest in the world.
11, mathematical maximum number
This may be the mistake of Google Public Welfare Advertising Hani, of course, there is no maximum number. I guess the problem should be "maximum number of mathematics (number)".
So far, the maximum number of human findings is 2 [size = -1] 24036583-1, which is the number of Mersennes.
12, the earliest period of dinosaurs
On the occasion of the Earth's evolution, a large asteroid that ending the dinosaur era of 65 million years will hit the Earth at the end of the second stack. The impact caused the extinction of most species, but also became a catalyst that appeared in dinosaur. In the two-fold period, the real dinosaurs must be officially debuted.
13, the production of red blood cells
Red blood cell is produced with iron ions by red blood cell. The red blood ball is a kind of Heiermone, which can increase the production of red blood cells, generally referred to as EPO, EPO must be synthesized in the kidney.
14,2002 Nobel Peace Award
Former US President Carter won the 2002 Nobel Peace Award.
15, Kelio Pettra's death
Cleopatra (Kerio Petra, 69-30 BC) Egyptian Emperor Krilio Petilazi is one of the most charming women in the past, she has extreme wisdom and beauty, and uses the two Long-term political goals in Egypt. Kelio Petra with Greek tradition and culture is one of the monarchs of Alexandrians conquering Egyptian. Her father Tori twelve, designated his eldest son Toller and her co-govern, rule Egypt. 51 BC La Latrat on the throne. Three years later, young Pletchi supporters expanded Kelio Petra.
In 48 BC, Caesar came to Egypt in Pompey, Pompey. When Kelio was heard that Caesar was in the palace of Alexander, she ordered her servant to wrap her a golden foil as a gift to Caesar. Caesar was conquered by her beauty, and the 52-year-old Caesar decided to help her. Tori Min 13th is abolished, Caesa deals with the brother Torgm Top 14 and her work together.
Kelio Pettra was a son of Caesar, named Caesarion, meaning "Small Caesar". After the child followed Caesar with their children, she lived in Caesar in the villa of Rome, Caesar often visited her. In 44 BC, Caesar was assassinated after Kelio Petra returned to Egypt. Soon after the death of Tori 14th, it may be caused by Kelio Pettra. The Queen specified her son Caesarion and her co-govern, starting the rule of PTolemy Caesar.
Caesar re-broke out the civil war after being assassinated, making the Roman Empire trapped. Mark Antony (Marc Antony) as the ruler of the East Roman Empire, summoned the Tarsus of Chilittra to Xiaoya, and helped him to clarify his enemies. The Queen sat in a luxurious yacht arrived, wearing like Venus. She uses a feast to treat Anthony. Anthony was attracted by her beauty and followed her to Alexander.
After a happy winter, Anthony returned to Rome. He and his relative Octavia in the octavian have married. But he still loved Kelio Petra, Kelio Petra gave him a pair of twins. When he returned to the east, he summoned Kelio Petra and got married with her on the way to resist the Patan people. The roof is anger to declare war in Kelio Pitera. Anthony and Kelio Prabanda dispatched 500 warships. The House Great will block these battles in the West Coast of Greece, followed by 31 Actium Battle in 31 BC.
Anthony is alone, the loss is heavy. Kelio Puritra blocked Anthony again from another side. This time I hit the sea from the land, although Anthony was brave, helpless rebellion, the trend is thin, it is unable to return to the day, I am also scarred, dying. Kelio Petra has long yet this ending, put himself in a mausoleum, let the servant told Anthony that she was dead, desperate Antoni crafted self-sufficiency, at this time, Kelio Petra came out from the tomb. In her hot kiss, Antoni died. Kelio Petra makes people transport his body to the Sutana River, they know each other, she put the poisonous snake in their chest, arms ...
16, Greek myths, nine-headed Snake Della
Heracrus is the first hero in the Myth of Greek. He is the son of Zeus and the women who have every serial woman. So it is born by the hearing of the heavens Herrase. It is said that Hercules means "by Hella curse ". The second part of the 12th of Herbles is the uniform monster. Xu Della is a big poisonous snake having nine heads. It is not a ghost in the grass. What is more terrible is that the biggest one in its head is killing, cut off, and will give two new heads, it is more powerful than the skill of the Kings.
He Huicles did not believe in evil, he found it in the door. Xu Draby is smart, it is headed, waiting for the attack of Herbles. Herzi Kles walked forward, a knife cut the largest snake head. It was a shocked thing that his snake's neck was immediately growing up again. Ten heads swayed, and creepy. At the time of Herbles, a big crab with Xu Dellai was quietly climbed, and the feet of Herco Kles were biting with two trips. Herbles returned, using the big tree, smashing the Cancer.
Killing the Cancer, he also has a way to deal with the snake. He smashed the big tree, burned the snake head that had just grown, and then cut the unsatheed snake head, bury it on the side of the road, pressed against a boulder. Finally, Herphores cut the poisonous snake into a few pieces, soak his arrow with snake blood. Since then, all monsters in his shot, no more drugs can be treated.
17. Unplug the thorn in the lion paw in the mythology of the Roman
Androcles is a slave from Africa (Tiberius) and the Caligula (Caligula). In order to escape the cruel slave owner, he hid into a cage. However, in the cage, he met with a tapped lion in his foot. Androcles helps the lion unplugged the big thorn and take care of it. Later, Andrew Kris was arrested by the slave owner to throw him into the large fighter scene against a lion. But lucky is his lion old friend on Andrew Kris. The lion not only didn't eat him, but also kissed him in all Romans. Andrew Kris and the lion have gained freedom. And the script "Andrew Kris and Lion" author George - Bernard - Xiao is born on July 26, 1856, his Leo's sun all-made star falls on the third palace representing the writing. So we don't even understand how he gets inspiration.
18, the capital of Sicily
Palermo, Burrowo, Italy, located in the northwest of Sicily. Sicily is located in the southwest of the Yaping Ning peninsula, is the football on the leather boots that extends to the Mediterranean. It is the largest island in Mediterranean. Here is a vast and rich, climate warm landscape beauty, abortion, lemon and oil olive. Because of its good natural environment in the development of the agriculture, it is called "gold basin".
19, the second one who boarded the moon
Edwin B. Aldrin is an astronaut on the No. 11 (Apollo 11). He became the second hero of the moon after 19 minutes of Moon in Armstrong.
Neil Armstrong and Edwin Oldlin are two people who mount the moon for the first time. They used to be a fighter driver. In 1962, Armstrong was selected by the National Airways and Space Administration and was trained as an astronaut. The following year, Oldlin was also trained.
In July 1969, "Apollo No. 11" cosmic spacecraft tried to send people to the moon. Armstrong is the commander of this flight mission. Oldlin is the driver of the moon, this small spacecraft is separated from the instruction cabin (main spacecraft) when the moon is settled. The third unit member Michael Collins (former test flyer) stayed in the instruction.
Neil Armster, Edwin Oldlin and Michael Collins were the first manner that manned the universe spacecraft. Armstrong and Oldlin truly boarded the moon, while Corinis stayed in the instruction cabin of the spacecraft around the moon ball track.
On July 20, 1969, Armstrong and Oldlin were sequentially mounted on the moon. Military people shared this historic moment through radio and TV, they heard the words when Armster Lady said: "Although for individuals, it is just a step; but for humanity, It is a huge leap. "Armstrong and Oldlin did a variety of tests before 24 July 1969 to the earth.
The area of Armstrian and Oldlin will be called "calm sea". They collected rock specimens during their stay, placed scientific instruments. One of the instruments is a seismic detector to determine the movement of the moon.
20, Swindakars
A huge rock, a huge rock, a huge rock, is carved, is said that it is the legendary Senax. About it still has a guess story.
This split is in the road to the way to Cairo, and the people who have encountered him have to ask a riddle. Anyone who can't guess, makes it a satisfying meal. But the riddle is very strange, no one can guess, so people don't dare to take the road again. People who want to go to Cairo have very urgent matter to go around a thousand miles, or just don't go.
One day, a young son heard about this, he decided to try it, others persuaded him not to go, because it is going to die. But he hugged the firm belief in the people to go.
Someth is coming, very happy. It seems that there is a delicious meal, he has an example of the riddle: "What is the four legs in the morning, it is two legs at noon, when the sun is falling to three legs?"
"This ..." The young man is really difficult.
"Come!" Said that he opened the big mouth of the blood. I can't hate a young man. But he wants this to run, or take a look at this kid.
"Is a person."
"What!" He felt very panic, but still did not die, "Why?"
"Because people have just happened to go, he climbed with both hands. This is not four legs. When people grow big, I have learned to walk, isn't there two legs, when people are old, when people go Holding a cane, this is not three legs. "
Swan Dakx has been mad, but he has to admit that the answer is right, because of the shame, he raises his hands. Since then, the road has restored the bustling of the past.
21, the world's largest building
The world's largest boulder architecture - Egypt Huf Pyramid
Huff Pyramid was built in the second law of Egyptian Fourth Dynasty (about 2670 BC), and is considered Hufu's mausoleum to build it. In the ancient Egypt, every method from the date of Dengfang, that is, she will build a mausoleum for her own, in order to seek death. The 4 bevels of Huffa Pyramid are in the east, south, west, north four squares. The error does not exceed the 3 points of the arc, the bottom is 230 meters, and due to the limestone of the tower falls, the bottom is reduced to 227 meters. The inclination is 51 degrees 52 points. Tower was 146.59 meters high, due to the top peeling, 136.5 meters high, equivalent to a 40-storey skyscraper, the bottom of the column is square, accounting for 52,900 square meters.
The Tower of Huf Pyramid is composed of 2.5 tons per weight of 1.5 tons per weight, and there is no bond. If these stones are chisked into a small piece of a cubic foot and arranged in a row, the length is equivalent to 2/3 of the globe perimeter. Huff pyramid engineering is a vast structure, its construction involves various fields such as measurement, astronomical, mechanics, physics and mathematics, known as the greatest stone building in human history, and has many unveiled mystery .
The world's largest holiday architecture - Beijing Great Hall
The Great Hall of the People has created a miracle in the history of architecture. At the end of October 1958, it was completed in August 1959, which was only a year from design to complement. The whole set of buildings is in the "mountain" shape, the front wall is "bow" glyph. The building area is 1.171,800 square meters. The middle is a famous 10,000-person conference hall, a three-storey, a large number of conferences that can accommodate more than 10,000 people. The shaped canopy is arranged in the vertical and horizontal, the top is a huge red pentagon star, surrounded by a sunflower ring and a three-layer water wave lamp. The north is a banquet hall with an area of 7,000 square meters, a banquet and a banquet. Southern is the office building of the People's Congress, including the various conference halls napped in various provinces, municipalities, autonomous regions, administrative specialtics.
The world's largest single construction project - Three Gorges Water Conservancy Hub
The Three Gorges Project includes 2335 meters long long. The discharge dam section is 483 meters, the hydropower station unit 700,000 kW × 26, the double line 5-level ship gate boat machine. The surface area of the Three Gorges reservoir will be equivalent to the total land area of Singapore, which is expected to spend $ 24.5 billion throughout the project.
The world's largest administrative building - US Pentagon
The Pentagon is located in Arlington Town, the Potomar River, Washington, USA, is the place where the US Department of Defense is located. Overlooking the air, this building is a positive five-sided shape, so the "five-corner building". It covers an area of 23.59 million square meters, and the building is 22 meters high. There are 5 floors, with a total construction area of approximately 344,000 square meters. At that time, cost is 87 million US dollars, on April 15, 1943, the same year Enabled in May, 230,000 people are available. There is a large parking lot on both sides of the main building, and 10,000 cars can be parked at the same time.
Best Ice Buildings in the World - Sweden Ice Hotel
The Ice Hotel, which is in Sweden, is the world's largest ice buildings, with a total area of 5,000 square meters, and receives 150 guests every night. In the past five years, the hotel repairs once a year in December, and the area increased year by year. At present, this hotel features ice sculptures, cinemas, sauna and ice, and there is also a unique ice prayer in the world.
The world's largest ancient architecture - Beijing Forbidden City
China Beijing's Forbidden City (also known as Forbidden City), located in the center of Beijing, for the palace of the Ming, Qing Dynasty, and 24 emperors have successively ruling here. It was built in 1406 and has been nearly 600 years. The Forbidden City is the largest, most complete ancient wood construction group in the world, covering an area of 720,000 square meters, with a building area of about 150,000 square meters, has more than 9,000 temples, including the Taihe Hall (also known as the Golden Temple), is The emperor held an instinct, the birthday celebration and the extension of the troops. The Forbidden City, Huangwahong Wall, Jinzhi Zhu Yu, white jade carving, palace overlap, spectacular, is the essence of Chinese ancient buildings. The palace has a collection of precious colonies and artworks about 1 million. In December 1987 it was included in the World Heritage List.
The longest artificial building in the world - China Wanli Great Wall
The majestic Great Wall, which traverses the hill of the Chongshan Mountain in the north, with a total length of more than 6,700 kilometers, started in the Spring and Autumn Warring States. It is a rare ancient military defense project in the history of human architecture. It is called the world with a long history, a vast project, and the majesty is known as the UNESCO, is known as "the eighth world". miracle".
The world's largest apartment building - Babinken residential area
The largest residential residential area is the residential area of London, the United Kingdom, in 1959, by architect Qian Bolin, Powell and Bond. The total area is 16 hectares, a total of 2014 sets of apartments, and 1710 cars can be parked.
The world's largest urban development zone - Shanghai Pudong New Area
Shanghai Pudong New Area, China, is separated from Huangpu River in Shanghai, which is the world's largest urban development zone, covering an area of 520 square kilometers, population 1.4 million.
Pudong New Area is composed of Lujiazui Financial Trade Zone, Jinqiao Export Processing Zone, Waigaoqiao Bonded Area and Zhangjiang High-tech Park. In April 1990, the construction was initiated, and 5548 foreign investment projects were introduced as of February 1999. There are more than 80 buildings that are currently built in the financial district and trade zone, including the general financial center, which will become the world's highest office building. The world's largest railway station - New York Metropolis Terminal
Metropolis in New York City, USA, is the world's largest railway station. In this century, it is funded by Millionaire William Vanderbeld, and the two construction companies in the United States, Warren and White Moore, Riddet and Steim jointly contract. This station covers an area of 19 hectares to the world. There are 41 iron routes in the upper layer, and there are 26 railway routes in the lower layer. There are more than 550 trains per day, and 210,000 goals have passed from here.
22, the world's lowest point
The ocean is the deepest part of the North Pacific Mariana Islands in Maryana. The Mariana ditch is a foreign bottom arc, extending 2550 kilometers, with an average of 69 km wide. There is a small steep valley at the bottom of the main ditch. In 1957, the Soviet Union was investigated by a depth of 10990 meters, and there was a new record of 11034 meters. In 1960, the US Navy's "" Riaster "," "of Riaster", has created a record of 10,911 meters in the ditch. It is generally believed that the ocean plate collides with the mainland plate plate, which is slightly dissolved under the insertion of the continental density, and gradually dissolved under the insertion of the mainland sector. In places where collisions are collisted, the ditch is formed, and the island arc and the coastal mountain are often formed near the continent. These places are a strong area of geological activities, which is characterized by volcanoes and earthquakes.
