An invention is a device （设备）,process, or method that is unique. Its design is an improvement of an existing device or product. It can also be a new process for producing a result or object. There are many famous inventions throughout the history and some of them are listed below.
Internet （1969）
Country: America
Inventor: Advanced Research Projects Agency（ARPA） at the Department of Defense An early form of the Internet was invented by the ARPAnet when scientists and military experts were concerned that a Soviet attack could wipe out the nation's system of telephones.
They designed a global network of computers that could communicate with one another. This design eventually led to the creation of the Internet as we know.
Band Aid
Country: America
Inventor: Earle Dickson
In 1920, Earle Dickson designed the Band Aid for his wife, Josephine, who often burned and cut herself when cooking. The design helped her cover her wounds by herself. The idea was passed to Dickson's employer, Johnson & Johnson, who marketed and produced the product. After that, Dickson developed a successful career with the company.
Electric washing machine（1907）
Country: America
Inventor: Alva J. Fisher
The first washing machine based on a motor（发动机）was made by Alva J. Fisher while he was at the Hurley Washing Machine Company. The electric motor of his machine allowed for faster and heavier wash loads than in earlier washing machines.
Battery
Country: Italy
Inventor: Alessandro Giuseppe Antonio Anastasio Volta
The first battery was invented by Alessandro Volta （physicist in Italy） in 1792. The science behind the concept of a battery that inspired Volta was observed by Luigi Galvani, who found that frog legs would twitch（抽搐）when touched by a spark from an external source（外部来源）of electricity.
