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| Walker, Jearl | 1 |
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Walker, Jearl – Scientific American, 1985
Presents a field formula for calculating speed and flight efficiency of soaring birds. By estimating the size of the bank angle and timing the complete circle, the observer can determine the speed and circling radius on a chart provided. Lift coefficients and flight characteristics of several birds are also discussed. (DH)
Descriptors: Biology, College Science, Higher Education, Motion
