What is Physics

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The word “Physics” has taken from the Greek word ‘Fusis’ which means ‘Nature’. So, Physics is the branch of the science where we study about Nature and natural phenomena. In the universe, everything has an effect of other things and in Physics, we study about these effects and its causes.
In other words, Physics is the study of laws, properties of matters, energy also known as  the relation between matter and energy. Physics is an experimental science to understand the natural world.

Physics can be classified into three types:

Classical Physics or Macroscopic Physics: Branches like mechanics, thermodynamics; optics etc. comes under this category where we study about astronomical or other large elements.
Modern Physics or Microscopic Physics: It deals with the microscopic elements as atoms, molecules etc.
Mesoscopic Physics: It deals with the study of hundreds of molecules or atoms.

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