Science and its blessings

In the early stages of civilization, man used to be scared of the natural forces like thunder, storm and lightning. He used to worship every object of nature like sky, earth, trees, air, sun and moon and even animals were worshipped. It was because man could not understand the natural phenomena1. He was, dependent on nature. Today, man has increased his knowledge and so has his power. The moon and other objects no longer fills man with fear. The earth has few secrets that are not known to man till date. How this tremendous change has come about?
Scientific studies have revolutionized everything. Electricity is one of the many gifts of scientific invention. All one has to do is to press a button and the room gets brightened up, the fans give refreshing air, an air conditioner turns the room into a hill resort. Various kinds of machines are run by electricity: room-heaters, ovens cooking ranges and several other household appliances. Big industrial units and factories which produce countless things of our daily use are run on electricity.
Advancement in the field of medical sciences has reduced the rate of mortality. Today, many diseases like cholera, small-pox and even tuberculosis are easily curable with the help of medicines. Surgery can remove tumors and set the human body right is many other ways. Discovery of antibiotics has made the cure of infectious diseases very easy. Open heart surgery and treatment of even cancer have become a possibility. Immunity against certain diseases like plague, cholera and small-pox can be ensured with the help of vaccination. Atomic energy is being used to cure diseases like cancer; radio-active isotopes are increasingly used for this purpose. Today, we are on the verge of cloning of different species.
Traveling has become fast, safe and comfortable. Long distances can be covered by aero planes, and fast moving trains, cars, buses, trams and scooters have Approximately 100 years ago when the telephone was invented, communicating with people who were far away from us was very difficult. The telegraph had already been invented, but it hasn't been fast enough. It has caused some problems in urgent events. However, as I mentioned above telephone came and has solved these problems and also this was the beginning of the field of telecommunication, but also Tesla's inventions were very important for the development of telecommunication. This beginning was also important, because this field trained its own engineers (telecommunication engineers) and radio, television, radars, wireless communication, satellites, cellular phones were invented by these engineers. With these inventions telecommunication becomes very important field and also telecommunication engineering came to a very important position.
In order to understand why telecommunication engineers become very important, firstly we must look around us. We can easily recognize how many people use the telephone or how many people use cellular phones or in how many houses there are televisions or radios or how important these communication devices are for our lives. Also everyday in newspapers, we read some news about the spy satellites that can listen or watch everywhere and telecommunication companies whose values are trillions of dollars. After seeing these properties, it is clear that telecommunication plays a key role in today's world. It is essential for the daily life, military area (spy satellites, radars) and financial area (telecommunication companies).