Recent content by LydiaAC

Hello everyone, I want to have a simple example of an inductance calculation. The magnetic field normal to a filamentary circular current loop is not constant over the circle but if we approximate the value as that for the center, multiply by the area of the circle and divide by the current...

I would like to have P-V-T data for water in order to enter them in an Excel spreadsheet and design some exercises for the students to plot different kind of diagrams using the same data. I can generate the data using some suitable model, but I think that having real experimental data would be...

I think I was not able to write a good sentence in English in 2008. You have four vectors, "a", "b", "reciprocal a" and "reciprocal b". "Reciprocal a" is orthogonal to "b", "reciprocal b" is orthogonal to "a". The shadow that makes "reciprocal a" on "a" (or vice versa) must be 1. The...

I feel very guilty now. Years ago I tried to get some "scientific" explanation to some of the facts people claimed about differences between white and black people. I argued something about black people being genetically selected by their endurance of adversity. The problem is that, when...

I wonder how many guys have found their soul-mates since I logged in Physics Forum for the last time. Maybe I already said this before, but as a pretty nerdy woman I have observed this strange phenomenon: A nerdy woman can also be seen as a trophy girlfriend! Imagine this: I know I am...

Francis, sorry for your loss. She is not here anymore, but your ability for love, that you had shown in your beautiful writing is still here. I understand why you want to write and remember: it is like it happens again.

Remember that in the savanah we did not have a "society" and to be a "sociopath" had no meaning. Do you think that one Wall Street stock expert, with tie and suit and used to pay for everything would survive the savanah? We are not attracted to those who give good prospect to our genes...

I agree, nerd men like exactly the same women than the rest of men. But your picture is not complete. Actually men are not so selective choosing sex partners because any sex act is a possibility of perpetuate their genes. They are only selective when choosing a wife, because they would need...

Hello divB: I am interested in the derivation. LydiaAC

Hello Kiran: It is a metaphor, it is the fact that you are you. Lydia

Hello Kiran: I have had friends in some point of my life but I always feel a hole in my heart because I do not feel they understand me as I would like. At forty one, I have come to think that maybe life does not work in that way, maybe to be completely understood is not something about you...

I had a friend who had set out to disprove Einstein's dilation of mass. He wanted to put a circuit on a scale, turn the circuit on, and check if the mass changed. He said that since electrons travel at light velocity, if the mass change were not there, Relativity would be proved false. I...

Interesting all the comments in this thread. I remember some people I know that have never published in international journals. The first time they tried, they received the referees comments and as they were not "oh, it is the more wonderful paper that I read in my life!", they started crying...

The best argument in favor to open borders I have heard is the libertarian one: to hire and be hired is a individual free choice, and governments must not interfere in it. Ask Ayn Rand. The worst argument is that you are talking about, the Fox's argument and actually the always present...

We can relax and enjoy this kind of jokes, but I always have a bad feeling about that. The equality of sexes is not only about women. Independent of the global score, it is important to avoid any unfairness against men. It is difficult to know, because in order to detect suffering you must...