Of course, the most important thing in our life is electricity, which has become the most important part of the world, affecting people's lives and promoting the development and progress of the world.
2. Light bulb
Edison invented the light bulb, which changed the progress and development of human civilization and brought light to the world. What a great invention.
3. Computers
Computers have changed our lives in many ways, from landing on the moon to browsing the web. Without them, everything would be impossible. In fact, it is hard to imagine how backward human life style is without computers. Computers can perform complex mathematical calculations at incredible speed, and when they are operated by skilled programmers, they can accomplish many things that humans can't.
4. Internet
The US Department of Defense first used the service in the 196s, which was called ARPANET. Then, in 1989, Tim Berner Lee invented the World Wide Web. Today, more than 1.7 billion people, or 25%, use the Internet. This is such a powerful invention that you can connect with the world.
5. E-mail
E-mail has influenced the communication between people all over the world. Before e-mail appeared, an enterprise had to print an important overseas document, package it, pay for the delivery service and wait for it to reach its destination. This process may take ten days, half a month or even longer. When e-mail appears, it becomes a part of all international business, and companies and students only need to send information to the recipients in a few minutes. Played an irreplaceable role.
6. Steam Engine
The Industrial Revolution was probably the biggest change in the shortest period in the history of civilization, which was driven by the steam engine. Now, although the steam engine has been replaced by electric power and internal combustion engine in the fields of transportation and factory energy, it is still extremely important. No matter whether steam burns coal, natural gas or nuclear reactor, most power plants in the world generate electricity through steam turbines.
7. Cars
Do you know that there are about 6 million cars in the world? There is about one car for every eleven people! We all know how important they are in our lives. It's hard to imagine what the world would be like without them.
8. Airplane
How can a person run 7 kilometers in 8 hours? Fly! We should all thank Orville and Wilbur Wright, who are called the Wright brothers. They installed a movable rudder on the glider and developed a three-axis control system. Glider is the basis of its patented control system and is still used in modern fixed-wing aircraft.
9. Mobile phones
Up to now, more than 5 billion mobile phones have been used in the world, or even more. China and India have the fastest growth in the number of mobile phones. Mobile technology has changed our way of communication. We can make communication between people more convenient and simple through telephone communication, SMS, email and so on.
1. Television
Television has become an indispensable part of our lives, and it is also the main user of offices and institutions, especially advertisements, entertainment and news. Since 197s, the appearance of video cassette, CD and DVD has made TV frequently used to watch videos and record materials. In recent years, ordinary TV has been upgraded to Internet TV and smart TV. With the continuous intelligent changes, our quality of life has become richer and richer, and the content has become more and more exciting.