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Published online by Cambridge University Press: 08 May 2017
* The resistance is really less than this in consequence of the rarefaction the air experiences. But the above answers for the comparison which we are going to make further on.
* This equation was given by Kargl and Zeuner in 1874
† This construction will be explained further on.
* Of course the varying velocity of the wing's motion must also be considered when a complete solution is attempted.