The telephone is one of the most welcome and useful inventions.No wonder more and more families have got to use their own telephones today.
The telephone makes things easy in many ways.Especially,after the mobile telephone appears,communication becomes easier and rapider.To students and people going out for business far away from their homes,the telephone can shorten the distance between them and their families.Thus they will get comfort whenever they are homesick or they run into trouble.With the help of the telephone,people can keep in touch with anyone at any time and in any place for urgent help.
All in all,the telephone is so helpful that we can say that nowadays we can not live without the telephone in our daily life.We will further improve the performance of the telephone so as to create better conditions for its development.
Edison (1847~1931) Edison,Thomas Alva American inventor. To the creation of factory laboratories, technology development and to open up avenues of scientific research in close connection with the name lowered history. February 11, 1847 in the Ohio Mailan a Dutch immigrant family. October 18, 1931 in New Jersey Xiaolan in death. Produced only three months of formal education received. 12-year-old has done Bao Tong, hawkers, Rapporteur, to fend for themselves. Because M. Faraday effect in life science research experiments and inventions. In 1868 he invented a recording device to sell to Taiwan votes Congress, but has not been used. Edison first invented so that he did not find the market more attention to the relevance of the invention. 1869, Edison moved to New York from Boston. He improved the indicators cable companies telegraph, the recognition by the manager of the company, employed 300 US dollars monthly salary (which at the time was very high salary). 1870, moved to New Jersey to begin his efficient invention period. 1874 improved typewriters. 1876, to the latter. Bell invented the telephone with a carbon Reap route, and raised the words beep. 1876, founded his famous laboratory. In the laboratory, he broke the previous individual scientists to engage in research tradition, organized a group of professionals (including N. Tesla and others), and the subject of his assignment, a common commitment to the invention, thus creating the correct way to modern scientific research. 1877, invented gramophone, which makes him original. 1878, the study began incandescent lamp in the 10 months after many failures, October 21, 1879 in the successful location of incandescence light lights carbon silk, stable location between two days. 1882, in New York pearl Street Block communal fire was the world's second plant, built in New York Urban Electric lighting, a modern electricity system to take shape. Mar lighting achievement has not only greatly improved the working conditions of production, but also herald an era of daily life electrification forthcoming. 1883, Edison bulbs in a vacuum test, accidentally discovered the cold, there is a current hot electrode. This phenomenon was called the Edison effect, become electron tube and electronic industries. 1887, from Xiaolan government, and in the same year in a larger city, the laboratory equipment is also updated the famous Edison Laboratory (later known as the invention factory). Here, according to G. School invention, produced its own camera. 1914, by Gramophone and camera film produced by the first audio system. Old age, his inventions and innovations including batteries, cement mixer, sound recording telephone, double - and multi-type cable system, railways used brakes. First World War, he served as Chairman of the Technical Advisory Committee to guide torpedoes and anti-submarine equipment research, invented dozens of weapons. To this end, the United States government in 1920 conferred on him the Distinguished Services Medal serving, the French government awarded honorary medals to his Corps spaces. 1928, the United States Congress to grant him honorary medals. Throughout their entire life cycle, Edison and his laboratory received 1,093 patents for their invention. Edison invented many life, but he is after all a system of scientific knowledge, and thus to the development of modern technology can not make the right judgment. In the 19th century, the exchange of transmission system has emerged, but he still insisted on direct current transmission, and with G. Westinghouse Niehaus fierce competition occurred lost Niagara hydropower project contracts; He blindly testing laboratory magnetic milling equipment, the invention Electric depletion of the funds had to be abandoned. However, Edison electricity in the development, application of electric appliances manufacturing promote the contribution that he became the history of mankind's greatest inventor the world.。
Different eras of political history are frequently identified with royal dynasties, or great wars and revolutions.Eras in the history of art and architecture may be distinguished by styles such as Renaissance, Gothic, Impressionist or Surrealist, and so on.Techniques too have marked different eras over the centuries: from the primitive tools of the Stone Age, to the Industrial Age marked by steam and electrical power and the discovery of turbines, and engines.Today, we have entered a new era: the computer age – an age which owes everything to inventors.Charles Babbage, an English mathematician, is considered to be the great-grandfather of the computer. Over 150 years ago, in 1840 to be exact, he invented a sophisticated calculating machine, and called it the "Analytical Engine." As with many inventions, his creation was far in advance of its time.。
What is my favorite invention?
We knew there had been many inventions at the last century, for example, electric light bulb, telephone, phonograph, mimeograph machine, automobile, airplane, atomic weapon, computer and so on. What is my favorite invention?
Personally, my favorite invention should be computer. In the old days, many scientists took much time to calculate and deal with research data, so the effective time in doing research was relatively shortened. For millions of times of calculating per second by computer, the researchers may have enough time to study more important issues. The processing of experiment results became very simple and easy. Aren't those all evidences that the computer is one of the greatest inventions in the last century, are those?
So my favorite invention is computer.
I think the most important modern invention is the Internet.With the Internet,we can do many things.For example,we can shop,learn knowledge,listen to music,and watch movies online.The Internet makes the world smaller.We can meet and talk to friends and relatives far away without spending a lot of money.We can also post our blogs online so our friends can know what we are doing by visiting our websites like QQ Space.Internet makes our life more exciting and easier.86单词 有很多关于发明的作文的.。
I will invent a time machine in the as it 's been my dream in my life. Time machine allows people to travel back in time to prevent disaster to happen. It also allows people to tavel into dinstant future to find out solution for Incurable illness including cancer and aids. However, this machine may be abused by people to create chaos in our world or even completely change our history. Therfore, security features are essential for my invention. The future invention of time machine will definately bring more advantages for human being.
In our life,there are many great inventions,such as the light,the pencil,the bag。At the age of 6,my father brought a car,he took me to school on the first day of school.It was so exciting.I fell in love with this invention on that day.The car can go anywhere and save time,but it also pullutes our environment.I holp I can invent clean cars.I hope the cars will enter every family,and I love cars best.
The Best Invention Ever Nowadays, the world is full of inventions. Just look around yourself, all those computers, cars, air-conditioners, they are all inventions. But as I far as I learn, The paper, which was invented by Chinese, is the best invention ever. Because it has contributed so much to the inheritance of knowledge, without which there would be no other modern inventions, or even modern civilizations. All science discoveries and literature achievements are based on paper, at least they used to be. And today, we can not live without paper either. Who would deny the paper is the best invention?。
Good morning,everyone! Today I'm going to talk about inventions.
Inventions are created every day because people would like to make life easier.There are famous inventions like the TV and the bicycle.TV provides us with different kinds of information so that we can know more about the world.We watch entertainment programs to relax ourselves.Besides some learning programs help us with our study.
The bicycle is very useful,too. We go to school or work by bike.It's not expensive that most of us can afford it.It makes no pollution,which is good for our environment.What's more ,bicycle riding is a kind of exciting sports which is quite good for our health.
Although there have been many great inventions, I wish to invent a kind of pen which can help us write more quickly and neatly.When we meet problems in doing our homework or taking exams,it will tell us how to solve them.
That's all .Thank you very much.