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No one has made such a great contribution to the progress of mankind except the great Newton and the great Einstein. Even Newton and Einstein used to draw wisdom and inspiration from him. He is "the ideal embodiment of the combination of theoretical genius and experimental genius", and he is Archimedes of Syracuse.

Archimedes' life

Archimedes (287-2 12 BC) was born in a small village near Syracuse, Greece. He was born into a noble family, and was related to King Hilong of Syracuse, and his family was very rich. Archimedes's father was an astronomer and mathematician, knowledgeable and humble. Influenced by his family, Archimedes became interested in mathematics, astronomy, especially ancient Greek geometry. When he was just eleven years old, with the help of his relationship with the royal family, he was sent to study in Alexandria, Egypt. Alexandria, located at the mouth of the Nile, was one of the centers of cultural trade at that time. There are magnificent museums, libraries and talented people here, which are praised as "the capital of wisdom" by the world. Archimedes studied and lived here for many years and had close contacts with many scholars. He absorbed the excellent cultural heritage of the East and ancient Greece and made great contributions to his later scientific career. In 2 12 BC, Roman troops invaded Syracuse, and Archimedes was killed by Roman soldiers at the age of 75. Archimedes' body is buried in Sicily, and the tombstone is engraved with a figure of a cylinder engraved with a ball to commemorate his outstanding contribution to geometry. Archimedes' achievements

Archimedes is undoubtedly the greatest mathematician and scientist produced by ancient Greek civilization. His outstanding contributions in many scientific fields earned him the high respect of his contemporaries.

Archimedes worked out the areas and volumes of parabolic bows, spirals and circles, as well as the volumes of complex geometric bodies such as ellipsoids and paraboloids. In the process of deriving these formulas, he skillfully used the "exhaustive method", which is what we call the method of gradually approaching the limit today, so he is recognized as the originator of calculus calculation. In this way, he also estimated that the value of ∏ was between and got the solution of cubic equation. Facing the tedious numerical representation in ancient Greece, Archimedes put forward an important method for calculating grades and used it to solve many mathematical problems. Archimedes made the most outstanding achievements in mechanics, mainly focusing on statics and hydrostatics. In the process of studying machinery, he discovered the lever principle and used this principle to design and manufacture many machines. He discovered the law of buoyancy in the process of studying floating bodies, which is also known as Archimedes principle.

Archimedes also made outstanding achievements in astronomy. He designed some balls and connected them with strings and sticks to imitate the movements of the sun, the moon and the stars, and made them rotate by water power. In this way, solar and lunar eclipses can be vividly displayed. Archimedes thought that the earth was spherical and revolved around the sun, which was earlier than Copernicus' Heliocentrism 1800 years. Limited by the conditions at that time, he did not make a thorough and systematic study on this issue. But it is remarkable to put forward such an opinion as early as the third century BC. Archimedes has many works. As a mathematician, he wrote many mathematical works, such as about spheres and cylinders, about cones and spheres, about parabola quadrature, about spirals and so on. As a mechanic, he wrote many mechanical works, such as On the Balance of Flat Plate, On Floating Body, On Lever, On Center of Gravity and so on. In the book On the Balance of Flat Plates, he systematically demonstrated the principle of leverage. When discussing floating bodies, he demonstrated the law of floating bodies.

Archimedes is not only brilliant in theory, but also an engineer with practical spirit. He designed and manufactured many institutions and machines in his life. In addition to the lever system, it is worth mentioning that there are weight lifting pulleys, irrigation machines, water pumps and military projectors. The water pump, known as Archimedes' water lifting screw, was invented to drain water from the cabin of a big ship. The water pump can be carried to a high place through the screw handle, which has been widely used in Egypt and is the predecessor of modern screw pump. "Give me a fulcrum, and I can move the earth."

Archimedes is not only a theorist, but also a practitioner. Throughout his life, he was keen on applying his scientific discoveries to practice, thus combining the two. In Egypt around 1500 BC, people used levers to lift heavy objects, but people didn't know why. Archimedes devoted himself to this phenomenon and discovered the lever principle.

King Hennon always doubted Archimedes' theory. He asked Archimedes to turn them into living examples to convince people. Archimedes said, "Give me a fulcrum and I can move the earth." The king said, "I'm afraid this can't be realized." You'd better help me tow that big boat on the coast. " This ship was built by King Henon for the king of Egypt. It is big and heavy, and has been stranded on the coast for many days because it can't move. Archimedes readily promised. Archimedes designed a complicated lever pulley system to be installed on the ship, and handed one end of the rope to King Henon. King Hennon gently pulled the rope, and a miracle appeared. The ship moved slowly and finally sank into the sea. The king was surprised and admired Archimedes very much. He sent someone to post a notice saying, "In the future, no matter what Archimedes says, you must believe him."

Mystery of golden crown

King Hennon asked the goldsmith to make a pure gold crown for him. After it was done, the king suspected that the craftsman had mixed silver into the crown, but the crown was as heavy as the pure gold given to the goldsmith at the beginning. Did the craftsman play tricks? The problem of trying to test the authenticity without destroying the crown not only stumped the king, but also made the ministers look at each other. Later, the king gave it to Archimedes. Archimedes thought hard about many methods, but all failed. One day, he went to the bathhouse to take a bath. Sitting in the bathtub, he saw the water overflowing and felt his body being gently pulled up. He suddenly realized that he jumped out of the bathtub and went straight to the palace without clothes on. He shouted "Eureka" and "Frica" all the way. It turns out that if the crown is put into water, the amount of water discharged is not equal to the same weight of gold, and it must be mixed with other metals. This is the famous law of buoyancy, that is, an object immersed in a liquid is subjected to upward buoyancy, and its size is equal to the weight of the liquid discharged by the object. Later, this law was named Archimedes principle.

Jet Li archives

Original name: Jet Li.

Nickname: Little Tiger.

Nickname: Li Yangzhong

Height: 169cm

Weight: 66 kg

Ethnic group: Han nationality

Country: China

Native place: Beijing

Gender: male

Place of birth: Beijing

Date of birth:1April 26, 963-

Personal data:

Producer: Li Yangzhong

Blood type: AB type

Zodiac: Rabbit/Taurus

Hobbies and beliefs: badminton/collecting dzi beads/philosophical Buddhism.

Favorite food: northern pasta/potatoes

Home address: Beijing hometown/Maxim's home is located in Acadia, east of Los Angeles, USA. Sold in 2003/new house in Shanghai.

Family relationship: parents (Li Qingquan 1965 died/Zhang Fenglan died in 2002); Two brothers (Li); Two sisters (Li He).

Marital status:

1986 married my school sister Huang, 1988 divorced (gave birth to two daughters).

1999 married Nina Li Chi in 2000 and gave birth to her daughter Jane.

Main experience:

martial arts

197 1 year-old (8 years old) entered Beijing Sports Special School.

1974 (1 1 year old)-champion of the national Wushu congress (junior champion) [Xi 'an] (optional fencing and designated boxing).

1975 (12 years old)-Wushu exhibition (champion of adult group) [Kunming] (boxing, knife, designated boxing, designated gun, duet and pentathlon)

1975 (12 years old)-The 3rd National Games of China (Wushu) [Beijing] (boxing, fencing, duet champion/designated boxing, designated gun art 2).

1976 (13 years old) —— Did not participate in the competition when doing goodwill performance in the international arena.

1977 (14 years old)-National Wushu Competition [Inner Mongolia] (champion of Changquan and Knife)

1978 (15 years old)-National Wushu Competition (men's champion) [Xiangtan] (boxing, knife, gun, optional boxing, duet and pentathlon)

1978 (15 years old)-National Wushu Competition (individual champion) [Changsha] (boxing, designated boxing, fencing champion/traditional weapon second place)

1979 (16 years old) —— The 4th National Games (men's all-around) [Shijiazhuang] (boxing, designated boxing, knife, antithesis champion).

1980 to present: film actor, starring in 32 films.

win an honour

In 2005, Jet Li was awarded the "Lifetime Achievement Award" by the "Sports Shadow Man" Centennial Award.

In 2004, Jet Li was awarded "Outstanding Chinese".

In 2002, he was elected as "Wu Xing of the Century" in the selection of China Wushu magazine.

In 2002, Jet Li won the 36th American Vision Award.

200 1, selected as the sexiest man in Hollywood entertainment circle.

200 1, Jet Li was elected as "the most famous Asian figure in America".

200 1 won the "Outstanding Contribution Award of Zhengzhou Tourism Development".

1998 was rated as one of the sexiest men in the world by People magazine.

1995 was rated as "Top Ten Five Stars" in China, and won the "Special Award for Mainlanders" in the 32nd Golden Horse Award.

In 2005, the 26th Asian American Cultural Festival was awarded the "Humanitarian Contribution Award".

Chronology of works:

2005: Huo Yuanjia

2005: Danny Wolfhound/Tiger is released.

2003: Cradle of Death/Dragon Pool and Tiger Cave/Fighting for Life

2002: Heroes

200 1: Mainland China: Shanghai: The Last Powerful Station: Savior

200 1: Hong Kong: Raptors Police Station: Kiss of the Dragon

2000: Hong Kong: Fatal Hero: Fatal Romeo

1998: port: blasting platform: lethal weapon 4

1998: the king of killers

1997: Huang feihong, the lion of the western regions

1996: Black Summer

1996: Adventure King

1995: Rowen of rat bile

1995: Letter to Dad/Wu Zhuangyuan and his son.

1994: Heroes of Jason Wu

1994: bodyguards in Zhongnanhai

1994: New Shaolin/Five Ancestors of Hong Xiguan

1993: Sanfeng, Zhang Chi, Thailand

1993: iron chicken fights centipede

1993: Demon Sect Leader of Eternal Dragon Slayer

1993: Fang Shiyu Ⅱ/Who and Struggle?

1993: Fang Shiyu Ⅰ

1992: Huang Feihong III, the Lion King, strives for hegemony.

1992: Dong Fangbubai standing proudly in the Jianghu.

Huang Feihong's dragons travel around the world.

199 1: The men of Huang Feihong II should strive for self-improvement.

1990: Huang Feihong I Top Gun

1989: Oriental Dragon

1988: enter the dragon

1986: South and North Shaolin

1986: A man called a hero

1984: Shaolin boy

1982: Shaolin Temple

Star file:

Jet Li 1963 was born in Beijing on April 26th. He studied in Factory Bridge Primary School and was chosen by coach Wu Bin to enter Beijing Shichahai Amateur Sports School. From then on, a martial arts wizard was born. His personal martial arts record has created a miracle in the field of modern martial arts in China. He won the all-around championship for five years in a row, won more than 50 championships, and visited and toured on behalf of the country many times. Xing Wu, one of the top ten contemporary martial arts figures in China, was an ever-victorious general in the martial arts field in 1970s. In the late 1970s, China Wushu was spread through movies. In the early 1980s, the debut of Shaolin Temple caused a sensation all over the world, which triggered the second global Wushu craze after Bruce Lee. He himself became an international superstar and has shot 32 classic kung fu works in the past 20 years. Since 1999, Hollywood has been invited to develop well, showing the charm of oriental martial arts culture. Kung fu emperors with handsome image, elegant temperament and excellent moral character are naturally favored by merchants. From the computer games developed by Sony to the image ambassadors of many domestic brands, all of them use charm to forge their images. Jet Li, who just celebrated his 4 1 birthday, was invited by the Hong Kong Avenue of Stars to record his film achievements. On February 26th, 65438, I was on vacation in Maldives when I was suddenly hit by a tsunami earthquake. Jet Li, who practiced Buddhism for a long time, was indifferent to fame and fortune. After the disaster, he felt a lot and called for the establishment of "1 fund" to help more people in need. Jet Li, who has many fans all over the world, has created his own achievements through his own efforts and won the recognition and praise of the world. From the martial arts wizard to the screen kung fu emperor, from the young monk in the original movie to the Buddhist wise man in present life. This is Jet Li, an introverted and elegant oriental charming man.

Twenty years ago, at the age of seventeen, he was a promising young man, who had won five consecutive championships in the national Wushu competition and was unmatched in competitive Wushu. After the performance, he rehearsed some stage plays with a group of like-minded partners, dreaming of popularizing China Wushu. A coincidence put him on the screen. While the film made a sensation in the north and south of the country, he also became famous in one fell swoop. His exquisite kung fu performance and fresh and beautiful image are well known to women and children in the Chinese world. Now, his name has resounded all over the world and even become a symbol of China Wushu. He is Jet Li.

1963 In the spring, Jet Li was born as the youngest child in an ordinary worker's family in Beijing. At the age of two, my father died, and my mother shouldered the burden of raising five children and two old people alone. Jianfeng Bao was honed, and poor childhood made Jet Li develop the habit of hard work and plain living, which is not unrelated to his great success in his future career. At the age of seven, Jet Li entered the martial arts class of Beijing Sports School because of the recommendation of his PE teacher. Because of his martial arts talent, because of the careful teaching of coach Wu Bin, or because he especially wanted to escape from the most annoying mathematics, he embarked on the road of martial arts champion and created unprecedented glory: Jet Li won the first place in the junior group of the national martial arts competition from 65438 to 0974, and won the all-around first place; From 1975 to 1979, Jet Li won the national Wushu championship for five consecutive years, was awarded special merit by the Beijing Municipal Sports Commission, and was also rated as "the attacker who climbed the peak bravely".

Opportunities always favor those who are prepared. 1982, directed by Xin, Jet Li plays the leading role-monk in the film Shaolin Temple produced by Hong Kong Zhongyuan Film Company. This is an epoch-making work in the history of martial arts movies. This film is a reversal of the pure expression of flower stands and camera skills in old-fashioned martial arts films. Through the simple and true kung fu of Jet Li and his martial arts players, the audience can truly appreciate the real merits of China martial arts. After the film was released in Hongkong and some countries in Asia, Australia and the United States, it caused a sensation in the film circle and achieved great success, which also created a generation of martial arts superstars in Jet Li.

With the influence of Shaolin Temple, Jet Li's Shaolin movies "Shaolin Kid" and "North and South Shaolin" starring in 1984 and 1986 are quite successful. He co-starred with Song Jia in 1988, and he co-starred with Stephen Chow in 1989, "Fight the Dragon", both of which fell into the cliché of revenge, and the ending was bleak. This is the silence and brewing before the outbreak. Soon after, Jet Li met the talented director Tsui Hark in the United States. The collision of two martial arts superstars set off a huge wave of martial arts movies, and some classic works of the new martial arts era appeared, such as Huang Feihong, Men Be Self-reliant and Dong Fangbubai. These movies are full of twists and turns, and the scenes are grand. Jet Li showed his elaborate martial arts movements incisively and vividly.

Unfortunately, the good times did not last long. Two years later, Jet Li broke up with Tsui Hark for some reason. After breaking up, Jet Li set up his own company-Zhengdong Film Production Co., Ltd. In that year, Fang Shiyu, directed by Yuan Kui and directed by Jet Li, was a great success. Since then, a pair of dream teams have appeared in the Hong Kong film industry. After that, their cooperation in "Zhongnanhai Bodyguard" and "A Letter to Dad" also achieved good results, and Jet Li made the cool appearance of guns attract countless audiences. 1994, the hero of Jason Wu, written and directed by Chen Jiashang, became the most successful work of Jet Li in this period, and Yuan Heping also designed his most classic movements.

1996, Jet Li signed a contract with Yongsheng Film Company to perform six films for him. Later, after years of cooperation with Tsui Hark, Black Summer attracted the attention of international filmmakers. At this time, the Hong Kong film industry has begun to decline, and Jet Li has also set its sights on the international market. Finally, he was invited by Warner Corporation to play lethal weapon 4 in 1998 and entered Hollywood.

In our memory, Jet Li's name is associated with these characters: Huang Feihong, Fang Shiyu, Hong Xiguan, Zhang Sanfeng, Zhang Wuji, Zhen Chen ... His more than 20 screen images are stern and steady (such as Huang Feihong), lively and cunning (such as Fang Shiyu), or bohemian (such as Ling Huchong), but they all shine with the brilliance of human nature; He can afford fists, guns, 18 kinds of martial arts and everything. He is our hero.

The hero also has weaknesses. He is very shy. After filming for more than ten years, he will be overwhelmed by the intimate scenes with an actress, blushing and heartbeat. 1999 Off-screen, Jet Li and Asian sister Nina Li Chi held a grand wedding, and the hero finally got the beauty back.

"The world out of my generation, into the river's lake, someone reminded; The emperor laughs and laughs, and life cannot be drunk. " Remember, this poem was sung by Jet Li when Ling Huchong was drunk. Now he has converted to Buddhism and Taoism, and he has no intention of fame and fortune. However, when the familiar name Jet Li became a strange Jet Li and our hero became a traitor in Hollywood, we realized that Jet Li, in a foreign country, had begun a more difficult and tortuous road. What remains unchanged is his heart that loves the Chinese nation and China Wushu.