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![]() "K7ITM" wrote in message ... On Dec 28, 6:36 pm, Art Unwin wrote: Gauss's boundary contains static particles Faraday cage contains static particles Both have a boundary that is conductive and thus can radiate. Both radiate when a time varying field is applied Both receive when transformed into a time varying field provided when the magnetic and electric moves to cancellation Both are applicable to Maxwell's equations for radiation Both start and finish with a time varient current. Both produce a charge by accelerating or removal of a charge via deceleration of a particle. The accelerant in both cases is the intersection of two closed fields. ( Electric field and a static field encircled by the displacement current) In both cases the particle has a straight line projection with spin In both cases the particle vector angles equate exactly with that of gravity and the Earth's rotation Question ; How does the particle ( singular) referred to in each case act like a wave or become a wave as stated in Classical Physics? Something for you to ponder, Art: If we shine monochromatic light source through a pinhole, some distance behind which there is a white screen, we'll see that the light is diffracted by the pinhole. If we have two such pinholes near each other, we'll see an interference pattern on the screen. If we replace the screen with a sensitive detector such as a photomuliplier with a small aperature which we can move over the area of the screen it replaces, we can quantitatively map the intensity versus location in that plane. If we reduce the intensity of the light source enough, we can get to the point where the photomultiplier detects individual photons at even the locations of greatest intensity. Eventually, we can get to an intensity where apparently there is almost never more than one photon at a time on a path from the source to the plane where the detector is located. If we count photons for long enough, though, we can map the intensity at that plane just as we did above. Now, will we see the same pattern, the same interference, the same _relative_ intensities, as we did when there were lots and lots of photons arriving at that plane? If so, why? If not, why not? Cheers, Tom Art, The same phenomena can also be demonstrated using microwaves. At UHF and VHF it allows signals to be received even though there is a solid mass between the transmitter and the receiver - signals can be received directly behind a tower block or skyscraper due purely to diffraction effects (so long as you are far enough behind the building). Hills and mountains can also be used as a diffraction edge at lower frequencies enabling reliable long range communications without direct line of sight. Electromagnetic waves, photons and electrons, are all inextricably linked. The electromagnetic wave is constantly varying as it propogates so that measuring it at one point reveals the magnetic element and half a wavelength later, the electrical element. For example, water is made up of hydrogen and oxygen atoms combined as H2O but displays properties that are completely different to either element in isolation. Why should electromagnetic waves be any different? The combination of electricity and magnetism as a "compound" would logically be expected to display properties that are different to electricity or magnetism in isolation. Hence the observed properties of electromagnetic radiation. Regards Mike G0ULI |
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