fizik note - Wikipedia Principle of relativity Top Home >...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Wikipedia: Principle of relativity Top Home > Library > Miscellaneous > Wikipedia Wikisource has original text related to this article: Relativity: The Special and General Theory In physics , the principle of relativity is the requirement that the equations, describing the laws of physics, have the same form in all admissible frames of reference . For example, the Maxwell equations have the same form in all inertial frames of reference; the Einstein field equation has the same form in arbitrary frames of reference. Several principles of relativity have been successfully applied throughout science , whether implicitly (as in Newtonian mechanics ) or explicitly (as in Albert Einstein 's special relativity and general relativity ). Contents [ hide ] 1 History of relativity 2 Basic relativity principles 3 Special principle of relativity o 3.1 In Newtonian mechanics o 3.2 In special relativity 4 General principle of relativity o 4.1 General relativity 5 See also 6 Further reading 7 Notes and references 8 External links History of relativity Main article: History of special relativity Basic relativity principles Certain principles of relativity have been widely assumed in most scientific disciplines. One of the most widespread is the belief that any law of nature should be the same at all times; and scientific investigations generally assume that laws of nature are the same regardless of the person measuring them. These sorts of principles have been incorporated into scientific inquiry at the most fundamental of levels. Any principle of relativity prescribes a symmetry in natural law: that is, the laws must look the same to one observer as they do to another. According to a deep theoretical result called Noether's theorem , any such symmetry will also imply a conservation law alongside. For
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
example, if two observers at different times see the same laws, then a quantity called energy will be conserved . In this light, relativity principles make testable predictions about how nature behaves, and are not just statements about how scientists should write laws. Special principle of relativity See also: Inertial frame of reference According to the first postulate of the special theory of relativity: [1] Special principle of relativity : If a system of coordinates K is chosen so that, in relation to it, physical laws hold good in their simplest form, the same laws hold good in relation to any other system of coordinates K' moving in uniform translation relatively to K. Albert Einstein: The Foundation of the General Theory of Relativity, Part A, §1 This postulate defines an inertial frame of reference . The special principle of relativity states that physical laws should be the same in every inertial frame of reference , but that they may vary across non-inertial ones. This principle is used in both Newtonian mechanics and the theory of special relativity . Its influence in the latter is so strong that Max Planck named the theory after the principle.
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern