- #1
Emissive
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- 0
In a standard 2 slit experiment setup when the interference pattern is visible - if the screen is moved forward the pattern must 'move' across the screen as the alignment of wave peaks and troughs change. I.e if we start with an intense band at the centre then move the screen forward half the wavelength of the light frequency then this constructive interference will become destructive and we should get a dark spot - is that correct?
So why do we get the pattern at all? If we are using a laser as the light source then photons will be emitted at differing distances from source - their wavelengths commencing at random points in the gain medium - meaning the alignment of each of the light waves will be effectively random - thereby leaving no interference?
So why do we get the pattern at all? If we are using a laser as the light source then photons will be emitted at differing distances from source - their wavelengths commencing at random points in the gain medium - meaning the alignment of each of the light waves will be effectively random - thereby leaving no interference?