Scope and excitement of physics Let Us Learn About Scope and excitement of physics Physics is exciting because, trains us in problem solving, It helps us to have an analytical outlook, to observe rather than see things. Everything is explained on the basis of the cause effect relationship, which helps us think logically and decide rationally Whether or not, a students of plus two continue to learn Physics, the basic problem solving skill he has acquired during the Pluto Physics course will remain with him and will be constantly helping him in all walks of life.
The knowledge of physics accumulated till 1900 is called classical physics that deals with macroscopic phenomena. It includes subjects like: 1)Mechanics 2)Thermodynamics 3)Electromagnetism, and 4)optics The recent knowledge (beyond 1900) is termed ‘modern physics’, consisting of 2 basic theories. A) Relativity b) Quantum mechanics The scope of physics is very large. Physics deals with a wide variety of disciplines such as mechanics, heat and light. Study of mechanics helps us to know the forces involved in the flight of a bird, walk of a man and so on.
The study of heat helps us to now the rise and fall of temperatures, working of heat engines and so on. Electricity helps to understand the basic principles involved in generators and motors. The exciting discipline of modern physics takes us into the microscopic world of atoms and electrons. The distribution of charges proposed by Thomson in his model was tested by Ernest Rutherford in 1909 by using subatomic projectiles to bombard a target of atoms. These projectiles, called alpha (a) particles, were identified as one of the products of radioactivity.
Rutherford famous a-particle scattering experiment is presented in the figure above. A stream of high energy a-particles from a radioactive source is directed at a thin foil (thickness-100 NM) of gold metal (having a circular fluorescent zinc sulfide screen round it). Whenever an a-particle strikes the screen, a tiny flash of light is produced at that point. Technology From Wisped, the free encyclopedia Jump to: navigation, search This article is about the use and knowledge of tools. For the Russian band, see Technology (band). For other uses, see Technology (disambiguation).
By the mid 20th century, humans had achieved a mastery of technology sufficient to eave the atmosphere of the Earth for the first time and explore space. Technology (from Greek rГ©xv, techno, “art, skill, cunning of hand”; and -Aorta, -loggia[l]) is the systems, and methods of organization, in order to solve a problem, improve a preexisting solution to a problem, achieve a goal, handle an applied input/output relation or perform a specific function. It can also refer to the collection of such tools, including machinery, modifications, arrangements and procedures.
Technologies significantly affect human as well as other animal species’ ability to control and adapt to their natural environments. The term can either be applied generally or to specific areas: examples include construction technology, medical technology, and information technology. The human species’ use of technology began with the conversion of natural resources into simple tools. The prehistorically discovery of the ability to control fire increased the available sources of food and the invention of the wheel helped humans in traveling in and controlling their environment.
Recent technological developments, including the printing press, the telephone, and the Internet, have lessened physical barriers to communication and allowed humans to interact freely on a global scale. However, not all technology has been used for peaceful purposes; the development of weapons of ever-increasing destructive power has progressed throughout history, from clubs to nuclear weapons. Technology has affected society and its surroundings in a number of ways.
In many societies, technology has helped develop more advanced economies (including today’s global economy) and has allowed the rise of a leisure class. Many technological processes produce unwanted by-products, known as pollution, and deplete natural resources, to the detriment of the Earth and its environment. Various implementations of technology influence the values of a society and new technology often raises new ethical questions. Examples include the rise of the notion of efficiency in terms of human productivity, a term originally applied only to machines, and the challenge of traditional norms.
Philosophical debates have arisen over the present and future use of technology in society, with disagreements over whether technology improves the human condition or worsens it. Neo-Eluding, anarchy- primitivism, and similar movements criticism the pervasiveness of technology in the odder world, opining that it harms the environment and alienates people; proponents of ideologies such as transmission and techno-progressivism view continued technological progress as beneficial to society and the human condition.