September 24, in history,
Main events:
1: September 24, 1852——The spacecraft promoted by the steam engine , successfully tested
2: September 24, 1909——HTM2 Beijing-Zhangjiakou Railway open to traffic
3: September 24, 1959——The Great Hall of the People was built
4: September 24, 1960——The world's first nuclear-powered aircraft carrier "enterprise" "Spring"
5: September 24, 1988 - The rare Mars " Big rush " began
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1952-September 24, 1852-Steptember 24, 1852-Steptember 24, 1852-Steptember 24, 1852-Steptember 24, 1852, the spacecraft propelled by the steam engine successfully flew.
On September 24, 1852, Frenchman Henry Gifal built the world's first powered driving drivable airship . This 43-meter-long, hydrogen airship is powered by a steam engine and flew 27 kilometers at a speed of 8 kilometers per hour. Gifal then made huge tethered balloons. About 35,000 people traveled on his tethered balloon at the 1878 World Expo .
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1909 September 24, 1909—The Beijing-Zhangjiakou Railway was opened to traffic
113 years ago today, on September 24, 1909 (August 11, 1909), the first railway designed by China was opened to traffic.
Beijing-Zhangjiakou Railway is a railway under the leadership of Zhan Tianyou. It connects to Fengtai District, Beijing, and goes to Zhangjiakou, Hebei through Badaling , Juyongguan , Shacheng , Xuanhua and other places. It has a total length of about 200 kilometers. It started construction in September 1905 and was completed in 1909. It is the first railway in China that does not use foreign funds and personnel, designed and put into operation by the Chinese. This railway project is arduous. It is now called Beijing-Baotong Railway . The previous Beijing-Zhangjiakou section was the first section of the Beijing-Baotou railway line.
Beijing-Zhangjiakou Railway was built by the Qing government despite the obstruction of colonialists such as Britain and Russia, and appointed Zhan Tianyou as the chief engineer of the Beijing-Zhangjiakou Railway Bureau (later served as the general office of the Beijing-Zhangjiakou Railway Bureau). The Guangou section of the Beijing-Zhangjiakou Railway has a stubborn and steep walls, and is difficult to climb. It has been regarded as a "farewell" since ancient times. Before the Beijing-Zhangjiakou Railway is opened, you must cross the Guangou section, and camel transport is the main method of transportation of materials.
On September 24, 1909, the old Zhangjiakou Railway Station held a opening ceremony. Someone described the grand occasion at that time: "Look at the train! People ran around and told each other and gathered here from all directions. On the empty field, a black dragon squirted thick smoke and roared forward. Accelerated, accelerated, gradually disappeared from the crowd's sight..."
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1959-24--The Great Hall of the People was built
63 years ago today, on September 24, 1959 (August 22, 1959), the Great Hall of the People was completed.
In Tiananmen , ten years ago, where Chairman Mao announced the founding of the People's Republic of China to the world, a magnificent building was built. This is The Great Hall of the People . The representatives of the 600 million people in the country will discuss national policies here, and the Standing Committee of the National People's Congress will plan national plans here. Tiananmen has become a place that people across the country and progressive people around the world yearn for more.
This city hall located on the right in front of Tiananmen Gate has a construction area of 171,800 square meters and a volume of 1,596,900 cubic meters. The building area exceeds the total effective area of all buildings in the Forbidden City. A yellow and green glass eaves outlined it from the blue sky. The spectacular colonnade, elegant tones, and the surrounding architectural facades form a solemn and gorgeous painting.
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September 24, 1960——The world's first nuclear-powered aircraft carrier "Enterprise" was launched
62 years ago today, on September 24, 1960 (August 4, 1960), the world's first nuclear-powered aircraft carrier "Enterprise " was launched.
On September 24, 1960, the USS Enterprise aircraft carrier was completed and launched, making it the world's first nuclear-powered aircraft carrier . The displacement is 85,600 tons, the full load displacement is 93,970 tons, the crew is 4,800, and carrier-based aircraft, with a cost of 451.3 million US dollars. Compared with conventional powered aircraft carriers, the superiority of "Enterprise" is self-evident. Usually, the warship needs to be refueled, and nuclear power does not need to be so time-consuming and labor-intensive. As long as the nuclear fuel is installed on the nuclear-powered aircraft carrier at one time, it can ensure that this aircraft carrier has sailed for 10 years. More importantly, the density of nuclear fuel is very high. The boiler and fuel space saved by nuclear power can increase the load of aviation fuel from 6,000 tons of ordinary power aircraft carriers to 11,000 tons; in addition, the gas and airflow discharged from conventional power aircraft carriers will corrode fighter , which will affect the performance of fighter aircraft. The nuclear fuel used by nuclear power aircraft carriers does not have smoke exhaust, and there is no such worry.
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1988 September 24, 1988 - The "big opposition" of Mars that is rare in a century began
34 years ago today, on September 24, 1988 (August 14, 1988), the "big opposition" of Mars that is rare in a century began.
On September 22, 1988, at 11:18 am Beijing time, the distance between Mars and the Earth was shortened from the farthest point of 401.3 million kilometers to the closest point of 58.81 million kilometers. This is the best time for humans to observe this mysterious planet on the ground for more than a century.
Chinese Academy of Sciences Beijing Observatory Researcher Zou Zhenlong told reporters that when the earth, Mars and the sun are on the same straight line, scientists call this phenomenon "opposition". September 22 to 28, 1988 are all "confrontation days". In the "Sun Opposition" Mars is closer to the Earth, and people can see it in the clear night sky. In addition to the moon, the brightest celestial object shining in the sky is this orange-red planet.
Researcher Zou Zhenlong said that Mars is closest to Earth called a "big opposition". This year's "big opposition" of Mars is the most important 140 years from 1875 to 2025. It is understood that from the evening of September 22, the International Mars Observation Federation and the International Planetary Society have organized nearly 500 astrophysicists and amateur astronomy enthusiasts from 33 countries as a week-long global observation activity. The Beijing Observatory of the Chinese Academy of Sciences has decided to open two astronomical observatory stations located in Shahe, suburbs of Beijing and Xinglong, Hebei Province from today, for free observation for astronomical enthusiasts.
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