Search results for query: *

What do we mean by a discharge voltage of a material ? and is it good to have a low one or a high one ? Thank you.

I want to extract the mathematical function for this graph of voltage response. Could you please help me or guide me in doing that ...

So you mean that I should take each portion appart (where f(x) is constant) and calculate the integral. Then, I add them all together ? Is there any other method where I can calculate Fourier series normally and then I multiply them by another factor which will make them increase or decrease ?

Hello, can we make a Fourier series expansion of a (increasing or decreasing) step function ? like the one that I attached here. I just want to know the idea of that if it is possible.

This is the refference to the article that I'm working with : Huria, Tarun, Massimo Ceraolo, Javier Gazzarri, and Robyn Jackey. "High fidelity electrical model with thermal dependence for characterization and simulation of high power lithium battery cells." In Electric Vehicle Conference...

Could someone please explain to me what is the definition of a pulse current discharge, and what do we mean by pulse current discharge test ?

Thanks sir for your responce, but what I want to know why the term of spin-magnetic field interaction doesn't appear in the hamiltonian of the electron. is it because it is so small in front of the kinetic energy for example ?

Hi, in the case of free electrons gas under the effect of a magnetic field. The hamiltonian of an electron doesn't contain a term of Spin-Magnetic field interaction this means that it contains just the kinetic energy terms. Why is that ?

Thank you DrDu.

What is the physical meaning of acoustic and optical branches in phonons dispersion curves ?

Thank you very much.

Is that the original article ?

I'm searching for Bose's paper/article that was published by Einstein. Can someone give me direct link to it ?

sorry, I didn't understand what you have said.

What do we mean by break points in band structure ? and what that sentence means : "if the band index were chosen in such a way that the energies are indexed in ascending order for any k then break points would appear in the εnk vs. k plot (with n fixed) wherever two lines intersect." ...

Thank you.

Can you give the name of an excited book of solid state / condensed matter physics ( beside kittel and ashcroft ) ? a book than contains more talking about experimental rather than theory

Thanks.

What do you recommend for example ?

What is the best physics journal for condensed matter physics ? And what is the best journal for all branchs of physics that keeps you on update ? Thanks

Thanks I'll try them.

Hi, is there any software that I can use for drawing a crystal structure from atoms coordinates ?

What is the material that doesn't diffract x rays ?

So 2 C5 means : C5, C54. Thanks you very much that's what I want to know.

I mean what means the notation of the class C'=(2C5) ,where C' is a class and 2C5 are the elements of this class.

One of the classes of the group C5v is written C=(2*C5). So why do we mean by 2*C5 and how we can know the elements of this class from this writing ? Thanks

I just want steps and advices for analysing any solid sample from it's microsopic image. For example Fe-C

How one can analyse an image of a solid material obtained with an optical microscope ?

Mod note: This post was moved from a different thread. Why the point group C1h is identical to C1v ? Why the point group C1h with horizontal twofold axis is identical to C2v ? Thanks

Oh ! I think 1-fold rotation means no symmetry so there is no axis of semmetry. Is that correct ?

How to draw the symettry axis for 1-fold rotation ? And why C1v is identical to C1h ? Thanks

Could someone tell me about what I must have as a knowledge to study condensed matter physics ?

What is the best book that gives you the essential knowledge for condensed matter physics ?

What is the best book in solid state physics that contains problems and solutions?

Thank you very much krylov and Zapper Z for your answers. I just want to tell you that I finished my first three years as undergraduate student, now I'm about to start my first msc year in condensed matter physics, but I'm not satisfied with my study method. So I understand from what you have...

How to read and understand successfully a physics book in any branch of physics ?

OK guys this is an exemple of sourcemeter unit : http://www.es-france.com/produit538/product_info.html , But what I want to know is what means CURRENT LIMIT physically.

We see always in source meter machines a LED which indicates the limit current. I want to know what is the limit current and what is the relationship between this later and the resistivity.

Now you understand me, and this is what I'm looking for if you can help me.

I'm talking about the Coulomb interaction energy between two harmonic oscillator ( two atoms modelised by two harmonic oscillator)

I'm allready studying physics of condensed matter, but I want to know if there are some missing modules that we didn't study or something like that.

Hello! In Van der Waals interaction, how to prove that : H= - (2*e^2*x1*x2) / R^3 ?

Ok so what they are studying in the first three years before graduate school?

Hello! Could someone tell me what they are studying in the first three years (undergradute) in condensed matter physics.

First of all I'm sorry for the late of replying, Vanhees71 Thank you for the answer you really helped me and ChrisVer I asked a question for you to help me or to correct me if I was wrong, and thank you for you too for the notice.

How to prove that e(the charge of proton)=1.6E-19 Mev.fm

Thanks but I'm searching for physics book not chemistry.

Hello ! what do you suggest as a good book for instrumental spectroscopy ?