Recent content by Lou Arnold

Retired computer engineer here. I have a professor's unpublished notes, back to 1974 entitled "Computer Communication Theory" that containing a great deal of probability, random variables, and Markov chain sections as well as old Bell Systems Journal notes about hardware and protocols. Has this...

Nothing to do with invention. The best example of problem that might interest me is the calculation of the degree of bending of a light bean from a star as the beam passes the sun. All one has for that are the Einstein equations. Einstein and Eddington calculated some 3 to 6 possible answers but...

No. Neither.

1. My question is: how do physicists calculate expected results for a future experiments. 2. What are those books?

Well, a "method" is perhaps a misnomer. I would call it an "approach". I'm surprised that no one seems to have asked this same question - how to ask a mathematical question -somtimes when the equations seem not to have a formulation that doesn't even mention the information wanted. It seems...

I don't know what the form of the solution is. Using Schwartzfeld's mathematical solutions are, in a sense closed form mathematical solution that makes the equations work, but they don't ask a question about the phenomenon. ODE maybe, but optimization may be part of the solution, but its the...

Look. The pendulum problem is a simple example. I don't need the solution. I need a plan of attack that works in general. Try the light bending problem that I meantioned. Try Langrangians for that. Did you not think that I already knew that method?? Can you not take the question further?

First, I would like a recommendation for a course that teaches and explains what I want help with, please. I understand the typical equations that are taught in undergrad and graduate physics. These equations describe the static and dynamic behaviour of physical phenomenon. However, when one...

I'm a retired Engineer. I want to learn methods to formulate equations to ask questions of physics phenomenon. What school teaches this and by whom? Can anyone point me there?

I understand your logic. Not very kind of Schutz to omit that small explanation Thanks for your help. I see dizzying notation coming in the next sections. I may need more help.

This isn't homework, nor is it an exercise problem; merely a question about a diagram. Re: B.Schutz book "A First Course in General Relativity" 2nd Edition, (Asian print version), page 5, Figure 1.1 "A spacetime diagram in natural units". From section 1.4 Spacetime diagrams: A world line is...