It works just fine with homogeneous media and simple boundary conditions, but that also would bypass a lot of potential errors in the code, e.g. typos in interpolating the staggered material mesh onto the temperature mesh.
For the system I need to simulate, which contains both glass and...
I have a perfectly working 2-D finite-difference thermal solver, using an alternating-direction implicit scheme (painfully written in Fortran 90 at my adviser’s insistence), that I have recently extended to 3-D. It is essentially a three step approximation to the Crank-Nicolson equation, which...
Somewhat leaving the topic now, but would it be correct to say that you cannot visually distinguish lasers of different wavelengths (considering sufficiently small bandwidths) as long as they stimulate the same receptor, i.e. any "red" laser is perceived with no more detail than being purely...
I am not that big on biology, but I believe to perceive white light you only need to stimulate the three types of cones in your eye in roughly equal proportions, so I think red, green, and blue lasers would do the job, regardless of coherence or bandwidth.
The problem goes away if you use relativistic (as opposed to classical) kinetic energy:
[ (1 - (v/c)^2)^(-1/2) - 1] m c^2.
You will see that if you try to solve for the velocity from this, you will always have something less than c, so arbitrarily large energies are permissible.
This does of...
1. I am not sure that there is generally only one possible image configuration for a given system, or how an argument against this can follow directly from Coulomb's law.
2. I am not saying that I should just arbitrarily multiply the fields because I have a weird fetish for such things. When...
The method of images exploits the fact any linear combination of solutions to a differential equation is also a solution, and the fields and potentials from a point source satisfy all relevant diff eq's, assuming the boundary conditions are met.
However, a scalar multiple of any solution is...
Here is what you want.
Sign(z) must return the algebraic sign of Z. You can code it with something like z/(Abs(z). This is used to ensure that the air resistance only slows the projectile, regardless of the direction it is traveling.
The parameter A will determine the strength of the air...
Or do what I am doing and attempt to approach fundamental physics through optics. There is plenty of work available for an arbitrary mix of theory and application at any given skill level. It is easy to get an experimental RA position in optics even as an undergrad, and you can smoothly...