Recent content by becko

quick google search brought me here. Any one can review this book? Any one has read it? Thanks.

I need the general expression for the lagrangian density of a linear elastic solid. I haven't been able to find this anywhere. Thanks.

Hello. Anyone knows online places where I can find classical papers of physics? Stuff by Einstein, Lorentz, Rutherford, Bohr, etc ... Any of these are welcome. Thanks.

So I have started Mechanics again. I'm now on the 4th chapter and I hope I will go through to the end this time. If anyone is also reading these books, or has read them in the past, please reply to this post, or PM me. From time to time I get stuck at places and it would be very helpful to count...

I just found out that the axis of figure of a symmetrical top is the axis corresponding to the unequal moment of inertia.

This is from Sommerfeld's Lectures on Mechanics. This is the quote "For the heavy symmetrical top the fixed point O (point of support in the socket) no longer coincides with the center of mass G (located on the axis of symmetry); call s the distance OG. The magnitude of the gravitational...

Hello. Can anyone tell me what is the "axis of figure" or "figure axis" ? This is in the context of rigid bodies, rotation, and moment of inertia.

I had to put off Mechanics for a while (had to prioritize other stuff at school). But I'll take it again in about two weeks. I only had time to complete chapter 1. In the summer I will be able to go on uninterrupted. I'm determined to go through all the vols of the series (at least up to the...

I want to read Sommerfed Lectures on Theoretical Physics. I started with vol.1 Mechanics. Just wondering if anyone here has read any of the vols? Or perhaps wants to read them in the future?

Yes it does help! I think the best way to understand something is to take a simple example and find a simple explanation to it. Thanks for your help!

It's not that I have to ignore it. It's that it can be ignored, because it doesn't interfere with the other waves. But I don't understand why. I guess they are located at the top, where I put a plane to visualize the light patterns. Light is divided in two waves, one reflected and one...

Ok. So I think I'm starting to get the idea. Problem is I don't have a clear idea of what "coherence length" is. I was hoping to improve my understanding with this particular example of Newton Rings. What I need is an explanation of what is happening without using the word coherence (since I...

fixed

I'm trying to understand Newton's rings. So we have a plano-convex lens supported in a plane (please, see image here http://scienceworld.wolfram.com/physics/NewtonsRings.html). The incident light is divided into the light that is reflected at the convex surface and the light that is reflected at...

You're right ! . The cross terms do cancel in the component normal to the boundary plane. Thanks !