Hey guys, I have a question regarding one of the 5 elements that compose creation. Shri Guru Nanak says, "panch tatu sunnahu pargasa"- From sunya the five elements manifested themselves" (SGGS, 1038) One of the five elements is akash or the ether, and accordinging to many oriental literature the akash or ether is a subtle element that pervades space and serves as a medium for sound. My question is sort of a physics question, Isn't the air the medium of sound, not the ether (akash)? Doesn't the vibrations of the air (pavan/vayu) propogate sound? According to modern physics, the akash is a medium for the propagation for light, but this differs from the Oriental view that the ether is the medium for sound? I would be thankful for a clarification. Thanks!