What is Physics?
Physics is the branch of science which deals with studying the behaviour of matter and energy and their interactions. The main goal of Physics is to understand how the universe behaves and how the energy is produced. Physics is a basic discipline in the category of Natural Sciences, which also includes other disciplines like Chemistry and Biology.
The word Physics comes from a Greek word meaning nature. Its Sanskrit equivalent is Bhautiki that is used to refer to the study of the physical world. A precise definition of this discipline is neither possible nor necessary. We can broadly describe physics as a study of the basic laws of nature and their manifestation in different natural phenomena. Two principal thrusts in physics are Unification and Reduction.
Physics improves our quality of life by providing the basic understanding necessary for developing new instrumentation and techniques for medical applications, such as computer tomography, magnetic resonance imaging, positron emission tomography, ultrasonic imaging, and laser surgery. We use physics in our daily life activities such as walking, cutting, watching, cooking, and opening and closing things. There are many branches of Physics like Mechanics, Optics, Thermodynamics, Relativity, Quantum Mechanics and many more.