Why does the electron have a magnetic moment?
Hi. I thought magnetic moment arose from closed loops of charge currents. How does then the angular momentum of the electron produce a magnetic moment? I mean, the electron is not a loop. Am I wrong in...
View ArticleAmpere's law
Dear all, I am trying use Ampere's law and came across a problem which is a result of my lack of understanding. [itex]\oint[/itex] B.dl=uI My lecturer derived the above equation by defining a point in...
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Proving heat equation and thermal cell model compatibility
I've been reading a paper which models heat transfer in solids using a finite element model. Elements are connected to each other through a thermal resistance. The heat equation given for conduction in...
View ArticleReference for Learning About Waves
I recently looked at the reference in an article I am reading, and subsequently checked "Oscillations and Waves in Linear and Nonlinear Systems" my Rabinovihc and Trubetskov from the local library....
View ArticleLagrangian is a function of ......
Since Lagrangian is a function of q, q dot & time, then why in describing the Hamiltonian (H), L does not involve time explicitly???? as H = (p*q dot) - L (q, q dot).
View ArticleBBKGY equations of kinetic theory
Are there any good books to understand the BBKGY equations of kinetic theory?
View ArticlePressure-Time relation for polytropic thermodynamic process
Dear Friends, I carried out an experiment of sudden release of oxygen (open nozzle) from an oxygen cylinder used for medical college and hospitals. I found that pressure drops quite rapidly and...
View Articleradial and tangential velocities for Inviscid flow (fluid mechanics)
After I have an expression for the stream-function in a problem, I can differentiate to get the tangential and radial velocities because I need those to solve the problem. But I don't understand when...
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Heat flux with oscillating heat sink
I am curious about the effects of oscillation in a heat transfer system. For example consider a simple system consisting of a heat source, a heat sink, and some generic material through which we will...
View ArticleWhat would happen if the moon's orbital radius were increased?
Relating to the synchronous nature of the moonÂ’s rotation and orbit around the earth, what would happen if the orbital radius of the moon were slightly increased? I want to ignore tidal locking or...
View ArticlePower generation through endothermic heat absorption.
I have been toying with an idea that may break the second law of thermodynamics for a while now, but it is basically this; An endothermic reaction is used to convert heat energy into chemical energy,...
View ArticleAntenna to Dump Excess Energy?
So, I was reading about this and playing around with a spacecraft design. From what I understand of it, a good way to be able to generate this field is with magnetic fields. So, I said let's put a...
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torsion of the curve
how can we understand torsion of curve is in the direction of normal unit vector en? Attached Images torsion of curvature.png (22.2 KB)
View ArticleHigh pressure tungsten incandescent light bulbs?
With increased pressure tungsten has a higher melting point. (source below page 30) 45kBar increases melting point from 3422oC to 3700oC. http://www.nist.gov/data/PDFfiles/jpcrd55.pdf An ideal 5800 K...
View ArticleFibre optics for use in lighting?
Is it possible to send enough light down a fibre optic cable to produce say 1000 Lumens? How would I go about calculating this? My thoughts here are using fibre optic cables to transfer light from the...
View ArticleSymplectic approach to canonical transformations
Hi, I'm studying classical mechanics via Goldstein's book. And at the beginning of the chapter on the symplectic approach to canonical transformations he writes (long citation ahead): Third Edition,...
View ArticleTwo bodies problem in other reference system
Hello, I would like to try to "model" motion of two gravitationally interacting bodies. But from some "separated" point. I can find the trajectory of mass point to orbits around some other mass point...
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Converging Lasers of Different Wavelengths
I hope this is the right place to ask this. It is an experiment question. I have a 785 nm laser and a 1550 nm laser and I need to converge them down to a point. Now I could just manually align the...
View ArticleAbout the concept of work done (High school student)
Hi I am kind of Confused about an example in work done: It says that a man applies 250 N parallel to the slope to push a box up a slope for 3 m, Now I know that the formula for work done if Force by...
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How do I visualise the equations from observation of a spinning wheel
Attachment 68685 From this figure we could see the axis of rotation of wheel is y axis and it's translational motion is along x axis How would I describe it's horizontal motion in terms of rotational...
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