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Presumably the window had been built and placed there a long time ago
So light in the window medium might take a year to flow through the windows? Maybe these windows could be made to order, some with the light taking just a week to flow through the window and in other slow light windows a hundred or even a thoudsand yearsThis is not beyond the realms of possibility these sci fi authors have so often come up with real scientific possibilities.
I don't know a lot about stored light but I do know that it's possible to have something travel faster than light (by, as you suggest, slowing the light down).Electrons released by nuclear reactions (genarally called beta particles in this case)are very energetic and can have velocities near that of light. If these travel through water or glass they are moving faster than light would, for example in glass, light only travels about 2/3 of it's usual speed.What hapens is that the electrons slow down rather quickly and their energy is released as cerencov radiation.http://en.wikipedia.org/wiki/Cherenkov_radiationWhat I would like to know is what happens if a neutron traveling near c passed through water or glass?It hasn't got a charge so it's hard to see how it can generate em radiation.
It also can cause ionisation as a result of nuclei rebounding so fast.
This might be of interest?"Although it is true that the neutron has zero net charge, it is nonetheless composed of electrically charged quarks, in the same way that a neutral atom is nonetheless composed of protons and electrons. As such, the neutron experiences the electromagnetic interaction. The net charge is zero, so if you are far enough away from the neutron that it appears to occupy no volume, then the total effect of the electric force will add up to zero. The movement of the charges inside the neutrons do not cancel however, and this is what gives the neutron its nonzero magnetic moment."http://www.newworldencyclopedia.org/entry/Neutron