Permeability Definition and 126 Threads

Consider a toroidal coil of rectangular section of N turns, for every one of which circulates a stream I. The inner radius of the coil is a and b is the exterior and the height is h. The core of this coil is a material inhomogeneous in such a way that their magnetic permeability just depends on...

hi..i'm an undergraduate student.i'm working on my final year project. I've been looking for the permittivity and permeability of ErAs, SI or any metamaterial but i find it difficult to get. i hope this forum could help me (n hope this forum is still active..hehe) THANX! o:)

If a material has a higher permeability (electromagnetism) than another when in the presence of a fixed H field, would it generally also have a higher permeability when in the presence of a changing H field?

Homework Statement I am doing a project for which I am learning some aspects of electromagnetism by myself, so you can imagine how lost I am. Well, not completely: I was searching for a ferrite with high permeability as a core material. I learned how the octahedral and tetrahedral sites and the...

I apologize if this is not in the correct section of the forum, but it seems most fitting. In the context of dielectric materials, I am having trouble understanding why in the discussion of the optical properties of magnetized bodies, it is justifiable to assume for light vibrations...

Simply, all I want to know is the value of the relative permeability of lead?? Can I assume this value to 1??

I had this lab done where we took beets and tested the effects of pH on membrane permeability. We used different concentrations of HCl and NaOH. Why did I get such a strong colour intensity with a test tube that had 0.001 M NaOH? And how do I know this experiment affected the protein...

Metamaterial structures such as split ring resonators exist such that at their resonant frequency, a stop band occurs, and are effectively therefore opaque to electromagnetic radiation at those frequencies. Could anyone explain this mechanism?

I was wondering if someone could please explain to me, in layman's terms, what magnetic permeability and relative permeability entails. thankyou

Hi everyone, Been doing some reading on permeability lately... My question is would the permeability of free space (u0) be related in any way to the vacuum energy density or would it remain the same regardless (4PIx10-7)? For eg would u0 be lower inside the space between the Casimir plates...

I just need see how the magnetic permeability of a piece of steel will change with a change in temperature. The reason why I need this is so that I can see what happens to the eddy current penetration depth when the material is being heat treated I already know that the electrical...

Has anybody done testing on how well various materials can prevent the passage of Radon gas? For example, a container made of thin low density plastic will apparently gradually permeate out Radon, but a high density plastic container will not. Other materials I have in mind are rubber...

im meant to design an experiment (at AS level) and perform it to see how the pH can affect beetroot cell membrane permeability. i don't know where to start. anyone have any experiments?? thanks :biggrin:

Searched all over, still could not find the magnetic permability of water vapour. Please help!. email me at shellysharma@yahoo.com if you know the value. Thanks for your time!

Speed of Light c= \frac {1} {\sqrt{\varepsilon_0\mu_0}} Phase Velocity v= \frac {1} {\sqrt{\varepsilon\mu}} Electric Permittivity of Free Space \varepsilon_0 = 10^{7}/4\pi c^2 \quad \mathrm{(in~ A^2\, s^4\, kg^{-1}\, m^{-3}, \, or \, F \, m^{-1})} Magnetic Permeability of Free Space...

hi from ukraine i'm a electronic engineering student at kiev polytechnic university i need your helps how can i calculate this question The steel winding with the number of coils w= 200 is put on thr ring-like closed core in regular intervals.The section is rectangular. The external...

I'm just looking through some work I did a while back and trying to simplify an expression, epsilon_{0}epsilon_{r}=epsilon is there an expression for mu_{0}mu_{r}?

Permittivity of a vacuum is a number arrived at beginning with a value for the speed of light in the vacuum and the permeability of the vacuum. NIST uses the term "electric constant" for what is commonly known as the permittivity of free space: Here's their official value...

Hi i am trying to frigure out the similarities and differences between permitivity and permeability? When do we use the one or another term?

I'm feeling a bit lazy, but curious. What experimental results confirm the values assigned for permeability and permittivity [as it relates to c]? I haven't explored the literature very thoroughly, but, have not been altogether satisfied with what little I found. Thanks!

Quote: Originally Posted by Artermis Hello Moonbear, I don't know if you know me but I'm a relatively new member but I know that you are very knowledgeable and helpful, hopefully you'll be willing to help me with this. Hi, I've seen you in the biology forum recently. Glad to have you...

Magnetic Dipole Moment does not include the permeability of free space? Hi, The formula for a magnetic field in a current loop involves the permeability of free space. But the formula for the magnetic dipole moment which seems to represent the flux through a current loop does not...

What does a substance's permeability of light depend on?

Does anyone know of a physical explanation of \epsilon_{0} and \mu_{0}?

And why is it related to pi?

Could someone please tell me the most detailed and direct definition of permeability and permittivity. I know that they are porportionalities of some sort but what else could they be viewed as? Why is εμ = 1/c^2 ?