Graded Index Fiber's Optimal Grade Profile Parameter P = 2
This was something I was thinking about yesterday regarding graded index optical fibers. So since most graded index fibers adhere to the power-law function for its refractive index profile of the core...
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Question of Image Theory with electric and magnetic conductors.
I have a few question in the Image Theory with electric and magnetic conductor plane. The drawing below is from Advanced EM theory by Balanis p 318. The top drawing are vertical and horizontal electric...
View ArticleMoments/torque in relation to laws of motion
I've just started learning about torque, and understand that tau=Fd, but wondered how this relates to F=ma. For example if there is a rod with a pivot in the middle (say a nail), when one end is pushed...
View ArticlePotential electricity production from water passed through Magma.
Dear Physicists I am well aware that this question does not have all the necessary information on order to get an exact answer, but what I am hoping to find is some educated guesses backed by some...
View ArticleCurl free magnetic field
In the wikipedia page for guiding center,the following lines are written about curvature drift of charged particles. Quote: The expression for the grad-B drift above can be rewritten for the case when...
View ArticleConfused about a very basic concept: Pressure.
Hello everybody, this is slightly embarrassing (for a physics student), but I realized in the last couple of days that I am somewhat confused with the concept of "pressure". Pressure is defined in...
View ArticleHow does alternating current travel anywhere?
I'm just learning the basics of electromagnetics and am a bit confused as to how ac works. From my understanding, a rotating conductive wire in a magnetic field create a current that changes direction...
View ArticleClassical Mechanics of NonConservative Systems
There is an article I am reading, http://authors.library.caltech.edu/3...110.174301.pdf I don't quite understand a lot of where this guy is coming from. I do not have much background in Lagrangian and...
View ArticleBuoyancy Situation Doubt - Archimedes Principle
Hi to all, i will appreciate your help in this. This is the situation: I have a tank, with a water column in it. This tank at the bottom has an "ideal" seal (a seal that permit the passing of object...
View ArticleIs birefringence different in plastics, glass and calcite?
1) Is birefringence different in plastics, tempered glass and calcite crystal? In plastics I see rainbow color bands (when looking through polaroid glasses), in tempered glass a colorless checkerboard...
View Articleelectron spin and magnetism
1 - How does an electron's spin generate its own magnetic field? 2 - Why are only the orientations of electrons taken into account in statements such as "permanent magnets are created when the...
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Work
Given some body with a constant force F acting on it upwards (The body is subject to the gravitational force due to the earth) What's the correct statement? Or: K - Kinetic Energy
View ArticleDoes friction oppose force or motion?
I have always treated friction as 'opposing' force rather than motion, either at its limit or to maintain equilibrium. I have just realised, however, that if an object is at rest on an inclined plane,...
View ArticleRelationship Between Conductance and the Dielectric Constant
Hello all, I'm new to the forum so I hope I'm posting this in the correct section. I'm currently conducting an experiment in which I'm examining how the dielectric constant of a binary mixture changes...
View ArticleFeasibility of raising up an object with cord and satellite
I know of the concept of a space elevator, and that right now it's not technologically in our grasp, but I thought up a variation on the concept. Using a cord with huge tensile strength, could an...
View ArticleDerivation of ideal gas law by Hamiltonian mechanics
Hi! I am trying to understand the statistical mechanics derivation of the ideal gas law shown at: http://en.wikipedia.org/wiki/Ideal_gas_law inder "Derivations". First of all, the statement "Then the...
View ArticleFluid mechanics of turbines
Hi all: I have a question regarding the fluid mechanics of turbine, both impulse and reaction turbines. I have searched many sites , including my fluid mechanic textbook, and yet I still don't quite...
View ArticlePurcell wire question
Lets say in frame 1 I have a neutral current carrying wire that has a +x line charge and a -x line charge and they have a relative speed between them. So In frame 1 there is only a B field. And in...
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Paper roller question - FBD etc
Dear friends... During the last months I am puzzled by the following problem and I would like to kindly ask for your assistance, There is a device that I am trying to analyse and although the results...
View ArticleThermal motion
In some texts about plasmas, the plasma oscillations are discussed at the extreme of no Thermal motion. One example is the one in wikipedia: Quote: 'Cold' electrons If the thermal motion of the...
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