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Published online by Cambridge University Press: 04 July 2016
I read Lt. Cdr. Whitehead’s article in the April Journal (p. 183) with considerable interest. As a summary of current problems I found it most illuminating. In my opinion however the author has rather over-simplified the mirror calculations and I feel that it may be worthwhile recording in slightly greater detail the basis of mirror calculations and the magnitude of the errors implicit in them.