An electric light is the most common form of artificial lighting in modern society, it providing the lighting for the buildings and nightime acitive. Before electric lighting became common in the early 20th century ,people were using the candles, gas lights, oil lamps, and fires for lighting. Before the electric light appear there have many problems, such as dim gas lights often killed people when a lamp blew out, and there were many criminals lurked at alleys to rob people. But these problems had solved after the electric light appears.
Most people believe that the light bulb is invented by the Americans Thomas Edison. But actual another American, Henry Goebbels, had invented the same principles and materials, and reliable bulbs, than Edison had for decades, and many others had contributed to the invention of electric lamps before Edison. However, according to a published in 2007 research results, this legend is not enough. Because the electric light people could continue working in larger areas, more work could be done, more goods produced. Also cities were able to stay open all night. Then the second innovation we analyzed is an airplane. For the most of time, an airplane is use for recreation, transportation for goods and people, military, and research. Most airplanes were flown by a aviator, but some airplane were designed for remotely or computer-controlled. The the problems that airplane solved were the communication and transportation. An airplane also led the invention of the space shuttle, so it changed science. In the 20th century, airplane made the most significant achievements in science and technology. Also, it was one of the three major inventions which had the greatest impact on human beings in the 20th century. Who invented the world's first fixed-wing aircraft various countries is still controversial, but the more common view was invented by the Americans Wright brothers. Their flight on December 17, 1903, as a "The first aircraft heavier than air has conducts a controlled sustained-powered flight" was endorsed by the International Airline Federation (FAI). Some of the most obvious impacts of airplanes are increases in the speed of travel, drastic changes in warfare methods, commercial impacts and the development of aeronautics. It also created the environmental damages and noise pollution in the world. The airplane has generated thousands of jobs of manufacturing, maintenance and operations, it also help to grow the tourism industry and trade with distant countries. The last innovation we analyzed is the internet. Internet is a vast computer network which link the smaller computer networks worldwide. The Internet include the governmental, commercial, educational, and the other networks, all of these use the same set of communications protocols. The Internet is the decisive technology of the Information Age, and with the explosion of wireless communication in the early twenty-first century. Now, let us look some facts of the internet. In fact, if the internet goes down for a day it's approximately 200 billion emails and 3 billion Google search would have to wait. The majority of internet traffic is cause by bots and malware, not generated by humans. And actually there has 30,000 websites are hacked every day, cybercriminals used the highly effective computer software programs to automatically detect the vulnerable websites which can be hacked easily.