Recent content by Plant_Boy

I'm reading a number of papers, journals, reports and what not trying to grasp at what the actual definition of \tau. \tau = \frac {m_{e}}{\rho e^{2} n} Am I correct in thinking: m_{e} - mass of an electron \rho - resistivity e - charge of electron n - number of electrons per unit...

You could maybe see if there is something of a Civil Engineering Forum. They might be able to help you on a general materials and how they are affected level.

Maybe I could start a new convention! XD

So this is like changing gears in a car. Weaker magnets would be like 5th gear and stronger magnets would be like 1st gear. Would you also get the appropriate torque response?

You could go with a number of coils that you can switch on and off or pulse width modulation? Pulse width modulation (PWM) is normally the most effective for control of the power. But if you want to change the number of poles (If the magnet is on the rotor then you're going to have a hard time...

Previously I had given the proof: \varepsilon - j \frac{\sigma}{\omega} = n^2 - K^2 + j2nK Should it be: \varepsilon_r = n^2 - K^2 + j2nK And so: \varepsilon_0 \varepsilon_r = \varepsilon_0 \varepsilon_r - j \frac{\sigma}{\omega} \varepsilon_r = \varepsilon_r - j\frac{\sigma}{\omega...

I have come across the dielectric constant represented by two variants of epsilon. Is there any convention behind the two variants such that: \varepsilon is the SI Dielectric Constant \epsilon is the CGS Dielectric Constant or does it really depend on the writer and how frisky they feel?

Oh, I thought they were meaning H, the Magnetic Field Intensity.

Oh, Are we about to go into Lorentz forces here...? O_o

I am quite interested in how this experiment was set up. It could be that as you close the loop, the magnetic fields interact better to store energy. C= \frac {A \varepsilon}{d} As the distance, d, gets smaller, the capacitance, C, gets larger.

Have you had a s'watch e' dis? http://www.ptable.com/

What is Equation (3)?

I suppose the question would then be, is the permittivity gained through complex refractive index similar to that of the permittivity relating Magnetic Fields and Electric fields?

It was a proof from Maxwell's Equations \nabla \times H(t)= J(t) + jωεE(t) J(t) = σE(t) Substitute \nabla \times H(t) = (σ + jωε) E(t) \nabla \times H(t) = jω (ε + \frac {σ}{jω}) E(t) \nabla \times H(t) = jω (ε - j \frac {σ}{ω}) E(t) \nabla \times H(t) = jω (ε' - j ε'') E(t) Where...

Greetings and Salutations! I just wanted to say the word Salutations. I am currently studying a post-doc degree in Optical-Electromagnetism-ey stuff. I have recently posted a question/thought process to one of the sub-forums [here]. I think you can tell a lot from a person by how they work and...