Welcome to the fascinating world of physics. Nature is a mystery that cannot be cracked so easily. A part of this entire mystery can be tried to understand by experiments. Physics forms the basis of these experiments. Many scientists have conducted many experiments to understand nature; many of them have been successful to try and understand the concepts behind the observed facts and conducted experiments. Many of the facts observed in everyday life can be explained by physics but some of them look simple yet cannot be explained fully or partially by physics. Even there are some strange as well as amazing phenomenons that are observed and can be explained fully. Take for example, the phenomenon of superconductivity which is an amazing one and is satisfactorily explained by BCS theory. Using this theory many applications such as MAGLEV (Magnetically Levitated Vehicles) and a superconducting magnet are developed. Explanations lead to the formulations of the theory, these theories supported by experimental observations gives rise to a “law”. Physics can be classified based on their nature and applicability of various proved facts to it.
As described, Newtonian physics or the classical physics, developed in order to explain the macroscopic phenomenon such as the motion of heavenly bodies, or any other macroscopic object. Sir Isaac Newton and Galileo can be rightfully called the founding fathers of classical physics. Out of the duo, Newton has contributed immensely to classical physics and hence it is named after him. The contribution of the latter cannot be disregarded. He laid the foundation stones for the construction of what a building called “The Astrophysics”. To explain their contribution in a nutshell, although not possible, right from the invention of the telescope and formulation of the three laws of motion to contribution in motion of heavenly bodies and work on gravitation. Now on the other hand talking about the quantum physics, first in all we need to know why the quantum physics was developed. Certain phenomenons at the atomic and sub-atomic levels were not being successfully explained by the classical mechanics and hence the theories and models based on the classical mechanics completely collapsed. There needed a new type of theory which could successfully explain atomic and sub-atomic phenomenon. This gave rise to the Quantum physics or called the Modern physics. Max Planck was the founding father of the modern or the quantum physics. The quantum physics could successfully explain all the phenomena at the atomic and sub-atomic levels. Based on the theory that “Energy is quantized”, the motion of electrons around the nucleus and the photo-electric effect, and many other were explained.
Both the classical and the modern physics are applicable and useful in their own way, the contributions of the scientists and the researchers have been immense. We should be indebted to those whose have invented many things based on the theories formulated by the scientists.
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