would this work? first of all, i need to know if my reasons for glass being transparent are correct. glass is a crystal, therefore, when the outermost atoms are hit by lthe first photons, the energy, by way of phonons is transfered to the inner atoms as well. when the second photons come by, theyre like "this atom has already been hit by photons and it doesnt fit my vibrational pattern any more" and so they keep going. now this theory makes sence to most crystals, but im sure they arent all transparent, just like they dont all perfectly tune in to the photons vibrational pattern (wavelenght) i was wondering if that made any sence, and if so, could you make some sort of fabric that when hit by light, sent phonons into the substance it covered therefore rendering it invisible?