Recent content by galaxion1

would you please elaborate more? what would the record of achievements include?

urgent help needed: difference between record of achievement and personal statement I want to apply to a research fellow position where they asked for -A statement of research interests -A cover letter - A record of achievements (ROA) Is the record of achievements different from the personal...

actually the phrase I used is the same on wikipedia http://en.wikipedia.org/wiki/Gravitational_time_dilation I wish I could find any relation demonstrating this difference in time rate on earth in different eras (if exists)

Ok... let me rephrase the question ...Does the expansion of universe result in experiencing a different gravitational potential on Earth than that experienced 4.5 billion years ago when Earth was formed (as it is farther apart now from the sun, the center of the galaxy, etc)? If yes...then as...

Is there any relation to measure this slight difference of time rate on Earth in terms of gravitational time dilation due to expansion of the universe? thanks

I think that they mean that F=Y*ΔL/L instead that is also stated in the folowing pdf in page 10 http://www.phys.ethz.ch/~babis/Teaching/QFTI/qft1.pdf this is not the problem, I am back again to the question "where is the area?!" how can we just redefine Youngs modulus that way?

anyway Do you have any explanation for Y=Ka, having the units of force as you said?

would you please see page 8 in this link and it all will be clear? http://www.staff.science.uu.nl/~wit00103/ftip/Ch01.pdf I am really grateful for your replies and consideration

because the subject is in the first chapter "classical field theory" do you feel that my topic is related by any means to modern physics or Quantum mechanics :)

you are considering 2 dimensional lattice here..right? but actually what I need is to go for 1 dimensional continuum from 1 dimensional discrete chain... my idiot question is about the area in the stress formula if the particles are already point like :shy: in "Quantum electrodynamics, A.A...

actually I was talking about a closed chain (a loop) consisting of N identicle particles of mass m each connected by a system of springs which represent the elastic interaction between the particles. At equilibrium the chain is a ring of radius R and the distance between the neighbouring...

I know that Young's modulus for a spring is Y= K*L/A where K: is the stiffness of the spring L: the original length of the spring A: the cross sectional area How does this formula change in the case of continuously distributed springs over a ring chain of radius R and a...