Visit Nanjing Science and Technology Museum

Nanjing Science and Technology Museum is located in the beautiful Ningnan New District and the beautiful Huashen Lake, covering an area of about 300,000 square meters, of which the main venue covers an area of 30,000 square meters, with a total investment of 350 million yuan. It includes the main venue of science and technology museum, science and technology cinema and scenic park. It is a science and technology main park integrating science and technology, humanities, art and tourism. At present, it has become the favorite popular science education place for millions of teenagers in Nanjing and surrounding cities.

Ladies and gentlemen, now we are in the Science Park of our museum, which is a science and technology theme park with natural garden style. The park is divided into three scenic spots, namely outdoor recreation area, outdoor recreation area and scenic area.

These large-scale exhibitions that we first saw in the outdoor entertainment area are the rock climbing training programs that young friends like very much. "Once you climb to the top of the mountain, you will see that all the other mountains look short under the sky." Rock climbing has attracted countless fans with its unique feeling of conquering height. Because ordinary people have few opportunities to climb mountains, expanding rock climbing training, as an independent sport, is rapidly popularized all over the world. Teenagers and children can exercise their physical coordination ability and cultivate their indomitable fighting spirit in rock climbing development training.

First of all, I will show you around the space exploration exhibition area of our museum. This exhibition area is the tallest and is located on the top floor of the Science and Technology Museum.

The space exploration exhibition area is divided into several small exhibition areas, such as interstellar fantasy, experience exploration, space theater, exploration road and digital micro-world. Here, we can intuitively understand the universe, the solar system and space knowledge, and we can also mysteriously explore the interstellar fantasy exhibition area through participatory activities.

Satellite technology is one of the cutting-edge technologies. If we master it, we can achieve a new leap in China's science and technology. However, making satellites is not easy. 1970 On April 24th, China's first artificial earth satellite flew into the sky. Many comrades who participated in the satellite development mission were so excited that tears filled their eyes and the whole country rejoiced. Next to me is a model of Dongfanghong-1 satellite.

When the satellite flew from the vast space to the earth with the crisp music of Dongfanghong, the land of China at that time was boiling, and hundreds of millions of people took to the streets to cheer for China's successful launch of the satellite and its entry into the field of space research, which also reflected the development level of China's economic, scientific, social and military capabilities at that time.

The exhibit opposite it is a model of the rover Spirit, which is made according to the ratio of 1 and 1. In June 2003, the United States launched a Mars probe into space. It took the rover more than six months to reach Mars on June 65438+1October 13, Beijing time in 2004, and carried out exploration and research activities on Mars.

Spirit weighs 175 kg, is 2. 1 m long, 0.6 m wide and 0.5 m high.

The projection shows the real picture of the rover safely landing on a distant and mysterious planet after more than six months of arduous journey.

This is the camera of the rover shooting Mars. The manipulator is collecting the soil and minerals on the surface of Mars, and then sending the data back to Earth through computer analysis and processing, helping human beings to explore Mars scientifically.

On my right hand side is the Shenzhou launch simulation developed by our country. This system consists of launch vehicle, launch tower, launch command center and projection demonstration. It simulates the whole process of carrying shenzhou spaceship into space and returning to the return capsule by the Long March 2F rocket.

When the rocket is ignited and flies out of people's sight, tourists and friends can follow and watch the escape tower separation, booster separation, first-stage rocket separation, fairing throwing, arrow-ship separation, solar sail deployment, spacecraft orbit change, and the return capsule carrying astronauts back to the atmosphere and safely landing at the scheduled recovery location.

Next, we entered the space theater exhibition area. In this exhibition area, you can experience the hardships of astronaut training, enjoy the fun of space travel and learn about the development of rockets in China.

Then the paraglider hanging in mid-air next to me controls gliding, climbing, diving, turning left or direction through the joystick. The speed and height of your gliding will be displayed on the screen at the same time, so you can enjoy the excitement of flying freely between mountains and white clouds. In a few minutes, the picture of your successful landing will be displayed.

In the process of exploring the universe, we gradually found that the earth is not the only planet in the vast universe. With the continuous improvement of human understanding, our understanding of the universe is also increasing. At present, eight planets, such as gold, wood, water, fire and earth, which are recognized by human beings, have also been displayed in our science and technology museum. For example, we now see the eight-star weighing. It lets you know all kinds of changes in your weight when you are on a planet in the solar system.

Please follow me through just visiting and exploring the mysteries of interstellar space and watching the representative models of ancient astronomical instruments in China and other countries.

Here, you can also find answers to some interesting questions. For example, what is the difference between an armillary sphere and a simple instrument? How did the ancients time without an alarm clock? How to know the position of the earth quickly and conveniently through the globe? How to know the position of the stars without being affected by the climate?

Through sand table and real scenes, this paper introduces the formation and characteristics of wetlands, forests and deserts, and their influence on human ecological balance. Coupled with earthquake simulation, flood simulation, volcano simulation, artificial ecological scenes, various animal and plant models and other exhibits, let us understand the geological form of the earth.

Through tourists' personal participation in simulated earthquakes, volcanoes, floods, tornadoes and other demonstration projects, tourists' perceptual knowledge of natural disasters is aroused. That is, while enjoying a happy life, people should pay more attention to protecting human homes.

This is the marine exploration exhibition area. Here, visitors can deeply feel the mystery of the ocean and experience the thrill and fun of sailing by participating in five large-scale exhibits, such as virtual fishing, underwater exploration and simulated sailing.

Protecting the environment and saving resources are the topics we have been calling for. The exhibition area we are about to enter is to advocate that tourists and friends should have the awareness of caring for resources and protecting the environment.

With the mass production of industrial wastewater, the exhaustion of non-renewable resources such as coal and oil, and the increasing awareness of human beings to protect the environment, it has become an inevitable development trend to use emerging energy to generate electricity.

The exhibit you see now shows how five different energy sources generate electricity.

Please choose a power generation mode at will, press the button corresponding to the edge of the sand table, and the corresponding model will be automatically demonstrated. Nowadays, the phenomenon of water pollution is becoming more and more serious, and the treatment technology of industrial wastewater has attracted more and more attention. Then, can industrial wastewater be treated to meet the purification standards and reused? This dynamic simulation demonstration device for industrial wastewater treatment gives us the best answer. Look here, we can see that the wastewater in the wastewater pool is transported to the micro-electrolysis bed through the water pump and flowmeter, where it reacts chemically with iron filings and carbon particles, transforming fe3+ into fe2+ as coagulant, adding alkali liquor to the mixer at the upper part of the coagulation pool to adjust the wastewater to weak alkalinity, and adding a small amount of polymer flocculant to produce coagulation, so that colloidal pollutants in the water are attached to flocs. This is a primary treatment process called chemical treatment. After primary treatment, the wastewater enters the secondary treatment system, and microorganisms decompose harmful substances into simple and harmless organic or inorganic substances in the aeration tank. In the secondary sedimentation tank, solid-liquid separation is carried out between activated sludge and treated wastewater, which is a secondary treatment process and a biological treatment. In the tertiary treatment, quartz sand and pebbles are used to filter the impurities in the water, and the black color in the adsorption column is activated carbon to remove the odor in the water. This is a physical process. The water treated in three steps can be used for fish farming and irrigation.

Next, we will enter the master of wisdom exhibition area. Most of them use the technology of combining virtual and reality. Here you can experience the feeling of entering the recording studio, and you can also experience the ultra-realistic sound quality brought by holographic sound. You can also play football and volleyball, where you can feel the sports experience brought by virtual technology.

The red area in front is the overall fire protection exhibition area specially set up by our museum, which is different from other venues. The design is based on the overall requirements of "ornamental, interesting, advanced, educational and interactive", and is mainly based on a three-dimensional dynamic model, which is divided into basic fire knowledge, common fire types and fire extinguishing demonstrations, fire alarm, fire rescue linkage demonstrations, fire escape live demonstrations, etc. Let the audience gain knowledge and deepen understanding through entertainment. In this exhibition area, visitors can have an escape drill in a simulated fire, choose the correct fire extinguishing equipment through the drill, find the exact fire extinguishing point, and watch the whole process of fire extinguishing in high-rise buildings through phantom imaging technology.

Then we came to the robot exhibition area: this wonderful robot uses an electric driver, which drives the robot to do various actions through gears, chains, connecting rods and other transmission mechanisms. The robot is also equipped with tactile, photoelectric and sound sensors, so that the robot has the functions of "touch", "vision" and "hearing". The robot playing saxophone has artificial lips and artificial larynx, and it can play beautiful saxophone music rhythmically with the help of air pressure device.

Along the way, it is the crystallization of human wisdom, which makes us want to know ourselves. The exhibition area of human origin can let us know about the development process of human beings and various by-products in the process of human development, such as the four great inventions and so on. Here you can also see the enlarged heart model and human skeleton model, revealing the mysteries of human science and human structure, and showing the functions of various tissues and organs in the human body.

This is an interactive human skeleton demonstration simulation. When the participant and the human skeleton model set foot on the bicycles connected by the transmission mechanism respectively, at this time, we can observe that the movement posture of the participant's legs and the leg bones in the human skeleton model are completely "superimposed" by using the principle of semi-transparent and semi-reflective mirror.

This is a heart model. The model shows that the heart is mainly composed of left and right atria, left and right ventricles and valves. Please look carefully at the whole process of heart work.

Please watch the function demonstration of various anatomical organs in the human body through the plexiglass shell, as well as the main organs such as respiratory system, digestive system, blood circulation system, urinary system and life generation mechanism.

Finally, we came to the "humanoid robot" exhibition area, which can be said to be the highlight of the second floor.

In the Western Zhou Dynasty, Yan, a skilled craftsman in China, developed a performer who could sing and dance well, which was the earliest recorded robot in China. At the end of the Spring and Autumn Period, Luban, a famous carpenter in China, was also a mechanical inventor. According to Mohist books, he once made a wooden bird, which could fly in the air for "three days", reflecting the wisdom of our working people.

Robots can accept human commands or execute pre-programmed programs. According to the principle program made by artificial intelligence technology, our library displays the first generation of robots in China, with 17 degrees of freedom. Now the robot has developed to 59 degrees of freedom, which increases the flexibility of joints. It can be seen that human intelligence has been fully displayed and brought into play in the field of robotics.

Science and technology are integrated with humanities, and nature echoes with art. As an important position for minors in Nanjing and teenagers in the province to carry out popular science education, Nanjing Youth Science and Technology Activity Center will continue to adhere to the concept of people-oriented and sustainable development, and constantly improve and improve science for the majority of young friends. In order to promote mankind to climb the peak of science; We will continue to make unremitting efforts to create a more scientific, civilized and better tomorrow for mankind.