Recent content by jmatejka

That standing wave is between 2 points? Could it be between a transmitter and a mountain, water tower, etc, etc? The nodes are/or can be fixed in that stationary oscillation?

A friend who was in Civil Air Patrol once told me he was using some RF Locator equipment and was "homing in" on a target. His walking path to the target was sinusoidal because of the wavelength of the frequency used. He said he was literally walking the wave.... Standing wave, I assume? Or...

Thanks Guys!

At 6:00 on the video: http://ocw.mit.edu/courses/physics/8-02-electricity-and-magnetism-spring-2002/video-lectures/lecture-28-index-of-refraction-and-poynting-vector/ S=0 B=0 E=0 So momentum is zero? "Time average value is usually discussed"

An M.I.T. Physics lecture mentioned B and E crossing over the x-axis as lowest energy state/position of the wave(s). Along the x axis, path of photon, is photon momentum here the lowest also? Does momentum vary? For a tiny target, if a photon collides at this exact point is there no momentum...

If anyone is interested, below is a reply to my question from my friend Richard Blade, former Chair of the Physics Dept, University of Colorado at Colorado Springs: John- All the statements you quoted are true. Macrosopically and mathematically, the speed of light in a transparent medium is...

I am aware of the speed of light, my question is if anything unusual is going on with permittivity and permeability that could account for "apparent" change in velocity, as refraction does. I also hopefully understand refraction is dealing with the photon and my question pertains to E&M fields...

If I understand correctly in refraction, photon absorption and re-emission accounts for light taking "longer" to travel. Regarding Permeability and Permittivity, the below linked website states: "permittivity affects the speed of propagation of a wave through a medium"...

I had this conversation with retired U.C.C.S. Physics Professor Bobby Bracewell last weekend. He thought Permeability of the medium could also create non-symmetrical waves. Any thoughts?

Thanks! I originally had a EMP question regarding Greater E field than B field. This seemed to make no sense to me. I actually should have said are B and E ever non-symmetrical in size and shape (under the curve). This would make no sense since one induces the other.

B and E are typically illustrated in a symmetric phase shifted oversimplified sine wave(s). Are the B and E waves ever non-symmetrical to one another? This seems to make no sense to me, as they induce one another. Also EM waves do not always involve the release of photons, correct? I...

Thanks your input and insight is much appreciated!

For sake of argument consider magnetically accelerating a Proton to greater than .1 "C". In an accelerator the proton is contained and accelerated by a magnetic field. Relativistic mass issues vs. available energy is the velocity limitation. Correct? As relativistic mass becomes...

Thanks, much appreciated!

Just to confirm. At (single) photon emission, E and B fields accompany. If this (single) photon is then absorbed, this photon's particular E and B fields "disappear" at time of absorption? If the photon stops propegating, so does it's fields, correct? If you were to collapse the E or B...