Origins of Physics and its application in various fields

Physics is one of the oldest branch of science. The basic principles of physics explain almost all the natural phenomenons that we come across everyday. The basic principles have also been used in chemistry and other branches of science. Physics is one of the primary pillars on which the whole framework of science stands. Without Physics its impossible to explain most important phenomenons in the universe. This article provides an in depth valuation on the subject of Physics.

With the help of the scientific methods and logic, and also taking Mathematics into perspective, Physics describes the nature of science through scientific models. Such models allow us to understand and predict accurately the behavior of natural phenomena. Scientific models, however, is a human construction. As such, they can not explain the nature in all its complexity, while providing a solid framework for your understanding. It is considered the fundamental science, synonymous with natural science, natural sciences such as chemistry and biology. It's presence in everyday life is very wide, and it is virtually impossible to completely describe the physical phenomena around us. The application of physics has benefited man to help develop almost all modern technologies ranging from cars to quantum computers. It is probably the oldest subjects in history which began even when people tried deciphering the motion of stars and other celestial beings in the sky.

Over the past millennia, physics was considered a synonym of Natural Philosophy and Chemistry, and confused with a few aspects of mathematics and biology. The division of areas of study of the natural world had no borders before the Scientific Revolution that occurred during the Renaissance. But Physics at that time established itself in its own right as a unique and modern science, initially beginning with significant studies by Galileo Galilei. This science, like any other, cannot be considered in isolation, since physics inter-relates significantly with other natural sciences, and this remarkable interplay in sciences is illustrated by subjects such as physical chemistry and Biophysics, among other examples. Often the distinction between physics and other science becomes virtually impossible: in disciplines such as mathematical physics and quantum chemistry rarely does a clear distinction between the two occur.

Being a science so wide, it is customary to divide it into smaller areas. Historically, the claim of modern physics as a science is closely linked to the development of mechanics, whose main pillars of study are mechanical energy and linear and angular movements, their conservations and variations. Since the late Middle Ages there was a need to understand mechanics, and knowledge of the time, especially Aristotle works, was no longer sufficient. Galileo brought out his studies on bullets, the pendulum and motions of the planets. Isaac Newton later developed the fundamental principles of dynamics and published the laws of universal gravitation in his book Principia, which became the most influential scientific works of all time. Thermodynamics, which studies the causes and effects of changes in temperature, pressure and volume at the macroscopic scale, had its origin in the invention of heat engines in the eighteenth century. These studies led to the concept of Energy .The connection of electricity, which is studying electrical charges, with magnetism, which is the study of the properties of magnets, was seen only in the early nineteenth century by Hans Christian Oersted. The physical and mathematical descriptions of Electricity and magnetism were unified by James Clerk Maxwell, and from then on these two areas, along with optics, came to be treated as different views of the same physical phenomenon, Electromagnetism. In the early twentieth century, the inability of the description and explanation of certain observed phenomena, such as the photoelectric effect, garnered the need to open up new horizons for physics. Albert Einstein published his theory of General Relativity in 1915 confirming the constancy in the speed of light, which opened up unimaginable possibilities. Max Planck, studying the black body radiation, was forced to conclude that the energy is divided into "packets" known as quanta. Einstein demonstrated the physical ideas of Planck, setting the early roots of quantum mechanics, the physics that describes and explains phenomena of subatomic dimensions.

Physics is a significant and influential science, and its evolutions are often reflected in the development of new technologies. The advancement of knowledge in electromagnetism led to the development of technologies that will certainly influence the daily life of modern society. The realm of 'power' led to the development and construction of engines. The field on electromagnetic radiation and control of electrical currents allowed the emergence of electronics and the consequent development of telecommunications and global information, which is now inseparable from contemporary civilized society. The development of knowledge in thermodynamics allowed transport dependent on human or animal power to stop, thanks to the advent of internal combustion engines, which also boasted of a whole Industrial Revolution. None of this would be possible, but without the development of mechanics, which can trace its roots to the very development of physics.

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