Recent content by Shahi

thanks for the answering, actually there are lagrangians that depend on direction

Thanks for answering I know what the Lagrangian is but I couldn't understand the way Landau reaches this conclusion...

Hi I am reading Landau's mechanics So in the first chapter page 5 It reads : since space is isotropic, the lagrangian must also be independent of the direction of v , and is therefore a function only of it's magnitude ... I can't understand why , I think Landau's book has many fans in this...

Hi I think you missed a step, you should consider a good deal of Modern physics course , because without it you couldn't understand why the physics needs to change at the beginning of 20th century So before any move forward ,, I think it's very necessary to read a Modern physics book , my...

I think you should stick with your professor lecture notes and avoid engaging the reading of both of them, they are really difficult to read, and they are not for self study , so I think for both of your courses just try to do more examples .