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Why would measuring the difference between a first and second backwall echo be more accurate than between the main bang and the first backwall echo?
Wiki User
∙ 14y ago
There is ringing on the front wall from the big bang that may interfere with detecting the back wall refections. So if you waiting for the second backwall bounce the front wall ringing should be gone and you can measure the difference between the two bounces.
Wiki User
∙ 14y ago
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