Recent content by Menaus

  1. M

    What is the optimum voltage for an X-ray tube and why is it important?

    In a Crookes tube an electron need not make a 180° turn. Also, somewhere I've heard of the use of single-electrode vacuum tubes for x-ray experiments, although I forgot where. In any case, do you think it is plausible in this case?
  2. M

    What is the optimum voltage for an X-ray tube and why is it important?

    I have a question also related to X-rays, although I don't mean to intrude. If the electrons have a high enough energy level, and they happen to hit an atom, is it possible that the electron would accelerate the atom to such a velocity that it would pass through the tube? If this is true, then...
  3. M

    Single-Wire 'Circuit' using Displacement Current as a Return Path

    Actually, I agree that it is better to look at it using transmission line theory. Also, I've often heard that displacement current was poor choice of words, and it is a misnomer, but this is only due to the definitions science has taken on. See, Maxwell defined things like this: "All charge...
  4. M

    Single-Wire 'Circuit' using Displacement Current as a Return Path

    Well, to be specific, I am thinking of this device mostly in a situation of power transmission, so we would want to reduce the far-field effects as much as possible and keep power transfer on the near-field side of things. I think you did read into it a bit too much, I was just mentioning...
  5. M

    Help understanding the electromagnetic radiation; mainly near field.

    I'm sure there's also an electric field between the individual turns of wire (outside). I was thinking about the situation outside of the wires as well. It is just negligible. Whoops, I think I made a bit of a grammar error in those statements. I meant that the "electric field [is caused by]...
  6. M

    Help understanding the electromagnetic radiation; mainly near field.

    Yes all electric circuits contain both electric and magnetic fields simultaneously. In a simple case, you can define the electric field as the cause of the difference of potential (or voltage) between two arbitrary points on the wire, and the magnetic field as the cause of the movement of charge...
  7. M

    Single-Wire 'Circuit' using Displacement Current as a Return Path

    What makes it impractical? From what I understand, the power losses would be lower than, say, your average 3-phase 60-cycle transmission line, since the losses in two wires would effectively be zero in a single-wire situation; of course, those wires aren't there. I think what I describe...
  8. M

    Single-Wire 'Circuit' using Displacement Current as a Return Path

    So, consider an average shorted capacitor connected to an alternating current power source. This capacitor has a certain capacitance, voltage, displacement current, etc. associated with it. Assume the dielectric of this capacitor is air. Let us increase the frequency of this source. Recall that...
  9. M

    Help understanding the electromagnetic radiation; mainly near field.

    There is no electric field associated with the electric current in the coiled loop of wire. However, the wire does have a certain voltage between the windings; usually it is extremely small, depends on the radius of the coil, among other things. This causes a weak electric field between the...
  10. M

    What Little-Known Physics Phenomenon Fascinates You?

    Single-wire transmission lines... Not even most graduates know about it. :O
  11. M

    This paper looks a bit sketchy.

    Hmmm... This article cites a paper as experimental evidence. "Experimental Evidence on Non-Applicability of the Standard Retardation Condition to Bound Magnetic Fields and on New Generalized Biot-Savart Law" http://arxiv.org/abs/physics/0601084 I has not been published by anyone. This is a...
  12. M

    This paper looks a bit sketchy.

    http://arxiv.org/abs/physics/0511172v2 "Instantaneous Interaction between Charged Particles" by Wolfgang Engelhardt Submitted to Annales de la Fondation Louis de Broglie Has this paper undergone a good process of peer review? It seems in violation of Special Relativity.
  13. M

    All Triangles are Isosceles Proof (Euclidean Geometry)

    Okay, first thing I realize after a moment is that I stated: angle EAD = angle EAB, where I thought I stated Angle EAD = angle DAB. Sorry for this terrible mistake. :( To be clear, this is exactly what the textbook shows for the hypothesis: (Ignore the hypothesis in the image) Given: Angle...
  14. M

    All Triangles are Isosceles Proof (Euclidean Geometry)

    Thank you for coming back and looking at my proof. Sorry if I was acting in a way that looked 'trollish' I suppose I'll have to draw it myself, then. I was hoping I could find a suitable figure online, but I guess not. Like I said earlier, I found the figure online, and it approximated...
  15. M

    All Triangles are Isosceles Proof (Euclidean Geometry)

    "I'm fine with accepting that this is not true in my picture" Really you just restated what I just said. I can be fine with EAD != EAB in my picture. My picture is just there to help people better visualize things, the picture itself says nothing about the proof. Again, I'd like for...
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