Alsalam alikom wa ra7mat Allah wa barakatoh What is Air without Sound anyway? I was looking from the window beside where I sit now, there were some construction happening over there, I have my windows open to get some fresh air... I thought, sound is not a substance by itself, it's just a sort of signal moving through materials... so if the material can alter the waves in somehow to the extent it eliminates them or at least makes them regular, then it'll not transfer the original sound waves... right? Some Science: Image via Wikipedia As I remember, to cancel a wave you have to face it with a similar wave in an exactly opposite direction +ve and -ve if you can say... if they matched in signal (+ve and +ve) that would produce resonance (e.g double the sound) and may drive me crazy :D ! What if this can be applied to a sheet that I can cover my window with, it can be driven by electricity or something.. it can have a sensor hold on some distance, that se...
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