The physics is one of the major sciences. It had so serious impact on mankind life that it just should be noticed. Nevertheless, many people will answer a question of its purpose not at once.
It is difficult to overestimate merits of physics. Being the science studying the most general and fundamental laws of the world surrounding us it unrecognizably changed human life. Once the terms "physicist" and "philosophy" were synonyms as both disciplines were directed to knowledge of the universe and the laws operating it. But later, from the beginning of a scientific and technological revolution, the physics became the separate scientific direction. So it gave to mankind? To answer this question, it is enough to look around. Thanks to opening and studying electricity the people use artificial lighting, their life is facilitated by uncountable electric devices. The research physics of electric discharges led to opening of a radio communication. Exactly thanks to physical researches around the world use the Internet and cell phones. Once scientists were sure that devices heavier than air cannot fly, it seemed natural and obvious. But Mongolfye's brothers, inventors of the balloon, and behind them and the brothers Wright who created the first plane proved groundlessness of these statements. Exactly thanks to physics the mankind placed to itself at service steam force. Emergence of steam-engines, and together with them engines and steamships, gave a powerful spur to industrial revolution. Thanks to the subdued steam force the people had an opportunity to use at the plants and factories the mechanisms not only facilitating work but also in dozens, hundreds of times increasing its performance. Without this science also space flights would not be possible. Thanks to opening of the law of universal gravitation by Isaac Newton there was an opportunity to calculate force necessary for removal of the spaceship on Earth orbit. Knowledge of laws of heavenly mechanics allows started from Earth automatic interplanetary stations successfully to reach other planets, overcoming millions of kilometers and precisely leaving to the appointed purpose. It is possible to tell without exaggeration that knowledge got by physics for ages of development of science is present at any area of human activity. Take a view of what now surrounds you – in production of all of the objects which are around you the major role was played by achievements of physics. Presently this science actively develops, in it such really mysterious direction as quantum physics appeared. The discoveries made in this area can unrecognizably change human life.