Recent content by rob5

Of course. The question then is what is an example of a typical beam size or number of electrons generated by a tungsten filament at a typical temperature associated with a specific current and pulled toward the plate containing the slit, say 10kV relative to the voltage at the filament...

What is the formula? reference?

What is the average distance between electrons in an electron beam such as produced in a cathode ray tube as they pass through the slit and then as they pass through the charged horizontal plates and magnetic coils etc that produce the deflection?

Let me take back what I said before " Thus I would expect the double slit diffraction experiment works in a vacuum but the single slit does not" I don't expect this. I must have been imagining in phase light sources at each slit but this is not what is done. That is the light coming from...

In the single slit case there are no obstacles between the points from which lines are drawn to the wall where the bright and dark strips and the shading between these are observed. But still you get the alternating pattern of bright and dark strips due to interference of different path...

1)No such patterns have ever been seen in a vacuum. Only the claim that there are dark strips where ethereal waves or their qed counter parts interfere destructively and light strips where these waves interfere constructively. The claim is based as you say on confirmations of the wave equation...

Yes and no. One diffractions slit but preferably with visible light and a few mm wide single diffraction slit. No. All texts that I have seen say there should be no difference because the cause of the diffraction pattern is the difference in distances from point sources on wave fronts in...

We are obviously not accelerating electrons or protons or such here and we are not talking about electron diffraction here. So I don't think the single slit (light) diffraction experiment in vacuuo has been done at some neighborhood synchroton center. But if you know of such a case or that it...

I don't know why you say the scattering from the air molecules is neglible. This is not the case when looking at a laser beam in air. But all of this is just speculation. Maybe a test could be done at Abbess: http://abbess.com/vac/homepage-vac.html#vacchambers-cube whose largest...

Yes the question here rephrased is what is the effect of the air molecule media ? The fact that light does not need any media to propagate in the vacuum of outer space and in Michelson's last light speed measurment etc indicates that the media is not necessary for light propagation in the single...