Science and technology
We live in the fascinating and challenging world of science. It is a world that more and more over the ages, and especially in the 20th century has come to affect so much of our lives. It is involved with the way we travel, the homes we live in and the clothes we wear, how we become ill and how medicine can make us better, and has given us fantastic means of communicating and exploring. The word science comes from the Latin "scientia," meaning knowledge. How do we define science? According to Webster's New Collegiate Dictionary, the definition of science is "knowledge attained through study or practice," or "knowledge covering general truths of the operation of general laws, esp. as obtained and tested through scientific method [and] concerned with the physical world." What does that really mean? Science refers to a system of acquiring knowledge. This system uses observation and experimentation to describe and explain natural phenomena. The term science also refers to the organized body of knowledge people have gained using that system. Less formally, the word science often describes any systematic field of study or the knowledge gained from it. What is the purpose of science? Perhaps the most general description is that the purpose of science is to produce useful models of reality. Most scientific investigations use some form of the scientific method. You can find out more about the scientific method here. Science as defined above is sometimes called pure science to differentiate it from applied science, which is the application of research to human needs. Fields of science are commonly classified along two major lines: - Natural sciences, the study of the natural world, and - Social sciences, the systematic study of human behavior and society. 2. The present age is the age of science. Science has influenced every walk of life. Today man cannot live even for a while without the use of one or the other of its inventions. Science has provided us with all possible comforts and has increased our happiness. Let us here discuss some of the most important of its wonders. Science has provided us with swift means of communication. The simple villagers still consider the railways as the work of gods. The railways have removed all those dangers and difficulties that man had to face during a journey in the past. By the steamship man has acquired complete mastery over the wild oceans. In the aeroplane, he can fly like birds. Science has conquered time and space. Still more wonderful is the invention of the wireless. It is now possible to talk to a person at a distance of thousands of kilometers. Through the Radio we can enjoy songs, dialogues, stories, etc. We can listen to news from every corner of the world. We have not to go anywhere; we have simply to turn the switch of our radio. Through the television we can also see the face of the singer or the speaker. The wireless has proved a great blessing for mankind and is serving humanity in various ways. Electricity is another wonder of science. It has turned night into day. In the winter it heats our rooms and in the summer it cools them. It moves our fans and other machines. Our cinemas, radio and TV sets are all worked by it. Even trains are now running by it. It is impossible to describe in full the manifold services of the wonders of science. Science has also achieved wonders in the field of medicine. There is now a cure for almost all kinds of diseases. Vaccines check the spread of infections as Cholera, Smallpox, etc. Penicillin and Streptomycin have proved to be a boon for humanity. Through the X-ray and cat scanners we can see the inner parts of the human body. Soon, it will become possible to cure cancer and AIDS also. Heart surgery has already become a matter of routine. Medical science has conquered pain and suffering and lengthened human life. It has given eves to the blind, cars to the deaf, voice to the dumb, and hand and feet to the...
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