Luke Campbell wrote:
> On Apr 8, 7:11 pm, Timurg...@[EMAIL PROTECTED]
wrote:
>> Quick question. I understand that you can negate a sound wave by
>> sending another wave of inverse form at it. Does the same work for x-
>> rays or gamma rays or other electronmagnetic media?
>
> It happens all the time. When an EM wave illuminates a material, the
> fields in the wave drives currents and moves charges around at the
> same frequency as the wave. These oscillating charges and currents
> act as sources of new EM waves with the same frequency as the incident
> wave. In effect, the material is giving off waves that can interfere
> with the incoming wave. When the wave acts on the moving charges and
> currents in the material that are generating the wave to do work, the
> result is the absorption of the wave, which can be though of as the
> destructive interference of the incident and emitted wave. The
> emitted wave can also constructively interfere in some directions and
> destructively interfere in others in such a way that the total EM
> energy is unchanged. In this case you have scattering and reflection
> of the wave.
>
> Luke
>
Hmmm... I'd say that the double-slid experiment also qualifies for a
'yes' (no need to get as complicated as above).
Wikipedia has something to so on this, too:
http://en.wikipedia.org/wiki/Double_slit
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