Lecture 31 - Recap of last lecture Postulate of Classical...

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

View Full Document Right Arrow Icon
Recap of last lecture Postulate of Classical relativity : Laws of mechanics (Newton’s laws ) are invariant in all inertial reference frames Crisis in classical relative : In classical relativity the velocity of light would be different in a frame moving with some finite velocity hence the laws of light propagation are frame dependent. Ditto for Maxwell’s equations; Brings back the idea that EM waves are travelling in some kind of medium called ether. But several high precision experiments looking for ether fail to find any; example the Michelson Morley experiment.
Image of page 1

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

View Full Document Right Arrow Icon
Special Relativity Einstein’s two postulates: 1. All physical phenomena must be frame invariant (for Inertial frames) 2. The speed of light is independent of the motion of the source. (not unusual for waves which need a medium to travel and their velocity depends on the properties of the medium) Consider a stationary light source S and two observers one stationary (R 1 ) and one moving with velocity v (R 2 ). The first postulate says that these two observers will measure the speed of light to be the same.
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