Recent content by SamBam77

What limits the precision with which you can describe the uncertainty of a measurement? I will describe two examples that feel qualitatively different, but I am not sure if they are quantitatively different in how you would deal with the uncertainty. 1) Measuring the length of a pencil with a...

To be sure, the vocabulary can be confusing and I am sure I am misusing it plenty in this discussion. Well it sounds like this is what I want. I want to be able to report a value (estimate) for W, along with an “error” in this value, which I arrive at after studying many samples. Other people...

If we assume that each object only has a single W, then no, this would not include multiple measurements on the same object. In reality, however, the W for an object can vary on the same object and there can be multiple measurements on the same object to assess this possibility. But, for...

There is a quantity (W) that I would like to calculate that is, ultimately, a function of parameters that I can measure directly (a and b), W = W(a, b) But I cannot measure a and b perfectly, there will be some uncertainty in these measurements. This uncertainty will propagate into my...

To be sure, as Simon Bridge said, the specific domain structure of a particular material is extremely complex and is influenced by the numerous defects and crystal structure of the material as well as many other things. But I am interested in it in a more general sense; I am interested in the...

In short, what I am asking is what is the reason/cause of the formation of ferro- magnetic/electric domains, and how would one calculate the 'driving energy' in order to predict domain formation? If we consider a dipole system that experience “ferromagnetic” coupling (my question does not...

By breaking the continuous O(3) rotational symmetry of the Heisenberg model, and forcing one of two discrete states in the Ising model, allows for a ferromagnetic state. Does it need to be such an extreme case of symmetry breaking, going from continuous to only two allowed states? What is I...

Any help?

I am a little confused about the Mermin-Wagner theorem, and the assumptions it makes, and I would like to better understand the 'exceptions' to the rule that occur in practical (non-ideal) scenarios. As is my understanding, The Mermin-Wagner theorem states that there cannot be spontaneous...

Is that statistically valid? I am not sure. I was hoping for a solution that would make use of the averages and deviations that I already calculated.

I am measuring the thickness of many identically prepared objects. In order to obtain the most accurate value, I measure each object multiple times, in different locations, and average these values to get the average thickness of that object, along with the standard deviation. But I am really...

Can anyone else offer some insight?

In my example, I was not considering the field inside the magnetic (be it NdFeB, or whatever), but rather the air/vacuum immediately outside the magnet. I should clarify that I am not really interested I specific case, but rather a more general understanding of what is going on. I just used...

I am trying to better understand some concepts in magnetism and I hope that someone here can help clarify a few questions that I have. I am trying to interpret the meaning of the specific coercive fields of magnetic objects. For the sake of discussion, let’s use neodymium (rare-earth)...

If I do this, however, the citation that it generates is not in any way connected with latex...it would be something that I could copy-past into other editors. That is what I originally wanted to do, take this output (which is correct) and use it to hard-code in my latex citation. How else...