About four hundred years ago, many people believed that they livedon stationary earth, hich itself is situated at the centre of the universe. The worlsd beyond solar system was a mystrey at that time. The submicroscopic domain of atoms & molecules was compeletly unknown. Not even a single law of nature was accurately formulated.
The Copernican theory of the solar system had been published, but it had many objections against it. There was scarsely any activity that could be called as science. Mathematics was just in it's infancy.
Man has always been curious to know about the nature & the natural phenomena taking place around him. These four hundred years have passed merely like a blink of an eye in the life-time of the human race. the man, with his urge to know, has discovered that the things which earlier appeared to be as complexities of nautre, are in fact, some sort of simple patterns of nature.
1.Mechanics(or Newtonian mechanics)--- The theory of motion of material objects at low speeds.
2.Thermodynamics--- The theory of heat, temprature & the behaviour of a system of a large number of particles.
3.Electromagnetism--- The theory of electricity, magnetism & electromagnetic radiation.
4.Relativity--- The theory of inveriance in nature & the theory covering the motion of the high speed moving particles.
The scope of physics is to large & will never end at any turn.
