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Ken Seto: Frequency = waves/unit area/unit time (5-Mar-2002) |
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> > We were talking about siren and now you want to talk about barking dog?? > > That's OK. Now tell me when the dog was very far away you didn't hear his > > barking at all right?? What does this mean? It means that the received > > frequency is zero. > > So the reason why I cannot hear Big Ben is not that its sound doesn't > reach me, but that the frequency of the sound that reaches me is zero? You were the one who brought up the point that the pitch of the train's whistle gets higher in the approaching leg..This is also observed daily with the ambulance's siren. So are you now denying that you made that statement?? Intensity = waves/unit area Frequency = waves/unit area/unit time Intensity is dependent on the distance between the source and the receiver. It is natural to conclude that frequency is also dependent on the distance between the source and the receiver. |
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Index Original post and context: 3c840fc5$0$1601$4c5ecdc7@news.erinet.com |