Quantum tunneling and MM

If you are going to get into QM what about the double slit experiment too.

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by jrich</i>
<br />What is the MM explanation for quantum tunneling of light where waves in the elysium would appear to be blocked?<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">I've never looked into quantum tunneling. But from what little I know, I'd hazard the guess that it is a failure to recognize the 3-D character of light waves. Normal light apparently oscillates in both in transverse and radial directions. See for example the work of Myron Evans.

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Jim</i>
<br />If you are going to get into QM what about the double slit experiment too.<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">Just recognize that light is a pure wave, not some kind of semi-particle. The double slit behavior is a normal interference pattern for pure waves. Photoelectrons get ejected from the target by resonance whenever the light frequency matches an electron frequency. -|Tom|-

The double slit experiment is not all that simple to explain. You should check out some of the papers available on line about the results of research various people are doing with a simple device that is not at all simple. It is not at all hard to follow and it is very interesting stuff relating to a lot of topics being chatted about on this site.

Tom,
<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by tvanflandern</i>
<br /><blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by jrich</i>
<br />What is the MM explanation for quantum tunneling of light where waves in the elysium would appear to be blocked?<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">I've never looked into quantum tunneling. But from what little I know, I'd hazard the guess that it is a failure to recognize the 3-D character of light waves. Normal light apparently oscillates in both in transverse and radial directions. See for example the work of Myron Evans.<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">
Quantum light experiments are usually performed using lasers. Do you think it might be the coherent nature of the light that leads to the effects? What exactly would a coherent wave look like? Assuming a pure wave nature of light, how would a coherent beam be possible? If one is going to posit a particle medium for light would it not be necessary to be able to explain these well known effects in terms of the theory?


JR

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by jrich</i>
<br />What exactly would a coherent wave look like?<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">Coherence just refers to the property of waves of some given wavelength in a medium to all have the same phase. Emissions from every star have the property of coherence. It is just more obvious in lasers because all emitted light has the same wavelength, whereas stars emit at a spectrum of different wavelengths. For stars, the property of coherence exists because the sum of any two sine waves with a common period is another sine wave.

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote">Assuming a pure wave nature of light, how would a coherent beam be possible?<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">Even though electrons emitting light at a given frequency throughout a star are not coordinated, they end up all contributing to a single coherent wave with amplitude equal to the statistical root-mean-square sum of the amplitudes of all the individual contributing waves.

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote">If one is going to posit a particle medium for light would it not be necessary to be able to explain these well known effects in terms of the theory?<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">Yes, but coherence is no longer considered a mystery. -|Tom|-

Tom,
<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by tvanflandern</i>
<br /><blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by jrich</i>
<br />What exactly would a coherent wave look like?<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">Coherence just refers to the property of waves of some given wavelength in a medium to all have the same phase. Emissions from every star have the property of coherence. It is just more obvious in lasers because all emitted light has the same wavelength, whereas stars emit at a spectrum of different wavelengths. For stars, the property of coherence exists because the sum of any two sine waves with a common period is another sine wave.

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote">Assuming a pure wave nature of light, how would a coherent beam be possible?<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">Even though electrons emitting light at a given frequency throughout a star are not coordinated, they end up all contributing to a single coherent wave with amplitude equal to the statistical root-mean-square sum of the amplitudes of all the individual contributing waves.

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote">If one is going to posit a particle medium for light would it not be necessary to be able to explain these well known effects in terms of the theory?<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">Yes, but coherence is no longer considered a mystery. -|Tom|-
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">
What makes a laser useful is that the wave fronts also propagate in the same direction and this is also required AFAIK for the waves to be considered "coherent". In any case I have never seen an explanation for how this directionality is maintained over vast distances if light is a pure wave. When the particle nature of light is assumed the explanation is trivial.


JR