Auditor,
I was introduced to Green's functions when I took a class in Electrodynamics (Jackson) and it seemed very arbitrary back then.
It was re-introduced to me in the Group-Theory class I'm taking. I can safely say that I like the approach better. This is probably the best class I have...
It depends on what aspect you wish to pursue? I learned it from a Vector-Space/Field perspective. The gist being, G(x,x') is a weighted sum of basis vectors. The calculus approach seems a bit un-intuitive.
The Electric field can exist independent of a source although it needs a source to produce it. This is not the answer to your question, but its something interesting to think about :)
Actually, there are an excellent set of articles published in OPN Trends asking the exact same question you did. You'd be surprised to know that there is no universeally accepted answer to this question :)
http://www.osa-opn.org/abstract.cfm?URI=OPN-14-10-49 [Broken]
No. Where did I say that? I don't think we understand each other clearly.
Entanglement is determined by performing a Franson Interference experiment on these photon pairs and registering coincidence counts.
Did you get the chance to read the paper I linked to?
Sorry, I can't parse that...
No chance of running any remotely modern game on a PCI frisbee. :)
AGP still has life in it and if I'm not mistaken, ALL modern games can be played on AGP versions of current cards.
BF2 uses a LOT of texture memory, often reserving DRAM space for textures. You gameplay (fps ) with BF2 is...
Actually, nobody knows the answer to this one. For a basic exposition, I would highly recommend that you read "QED-The Strange theory of light and Matter by R.P Feynman".
The stuff you learn about matching up boundary conditions to retrace the path of the reflected and refracted rays (Classical...
I must also add that "color" has no physically precise meaning if taken out of a Mathematical context. It is a relative term attributed to individual experience. Physically and Mathematically speaking "color" implies Energy. :)
PDC can be of many types, degenerate, non-degenerate Type I or Type II. In type I SPDC, the photons are spatially seperated (I suppose this is what you are referring to as "rings"). However, this has no bearing on their individual frequencies, which have an intrinsic uncertainity associated with...
A Blue Photon has more Energy than a Red Photon. Other than that, they may have different phase and polarization. Fundementally , Energy is the most obvious measurable quantity which distinguishes these two photons in particular.
Lol man, designing a PCB is not as easy as you think. Routing wires is tricky. There are several other issues like seperating the power, analog and digital signal paths, making optimum sue of filter caps, picking the right pcb material, providing ground planes, component placement geometry etc...
Strictly speaking, the electron has infinite energy. What you measure (with a degree of inaccuracy) is the "dressed energy" of the electron. Similarly all other obeservable properties of the electron like mass and charge are dressed due to its interaction with vacuum (sea of virtual...
That stuff is beyond my understanding at this point. The mathematics is a bit too advanced for me. I am still looking into it though. Thnaks for the link. The author is quite a well known guy in QFT circles.