LearmSceince
31st August 2007 - 06:41 PM
QUOTE (drwahl6913+Aug 31 2007, 01:56 PM)
Why do you refer to these interactions as photon collisions? Are you claiming these photon interactions are different than the destructive interference which can be observed across the entire electromagnetic spectrum?
The wikipedia has a good article on two-photon physics, showing how it is a secondary interaction among the virtual particles created by a photon.
What does that have to do with destructive interference? I don't understand why you are equating the two.
LearmSceince
31st August 2007 - 06:47 PM
QUOTE (drwahl6913+Aug 31 2007, 02:57 PM)
Do you agree that an electromagnetic wave is made up of a substance?
If you do, then the destructive interference has removed that substance from the original waveform. The substance is now in the form of matter particles. Its called a standing wave and for all destructive interference no matter what kind of waves we observe, a standing wave is produced from destructive interference.
That does not make any sense whatsoever.
Quantum interference, as seen in the double-slit experiment, controls where a particle will be found -- where it is allowed to go.
Classical interference, like in radio waves, is when the antenna is affected in opposite ways at the same time, so no net electric field is seen.
A standing wave is one that retraces its path over and over again.
drwahl6913
31st August 2007 - 11:51 PM
I don't know how else to explain this, if we have a wave tank with a measured amount of water. Then we produce waves at one end of the wave tank and measure the amount of water in waveform and the amount of water not in waveform (the body of water making up the medium). Now if we produce the identical waves at the other end of the wave tank a destructive interference will take place between the waves. At the location where the destructive interference takes place we will notice a higher level of water as the standing wave is developed. If we could produce a single wave at each end of the tank when the waves meet in the middle and cancel each other out the water level where the waves met would be a higher water level, this is the standing wave. Which is then absorbed back into the body of water.
By your definition of the destructive interference of electromagnetic waves when applied to this water tank you are saying we will have less water in the tank as we cancel waves. This is not so, we will always have the same amount of water, some will be in waveform and some will not. This has to be true for electromagnetic waves too.
Even in the double slit experiment, destructive interference removes the electromagnetic energy from waveform which is observed as no light on the screen. Constructive interference can also be observed making up the bands of light which will appear on the screen.
Dale Wahl
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