The mechanical engineer's pocket-book. A reference-book of rules, tables, data, and formulæ, for the use of engineers, mechanics, and students (1910)
Kent, William, 1851-1918 · New York, J. Wiley & sons · leaf 100
GEOMETRICAL PROBLEMS. 51 … the distance, on a line joining the foci, between the two branches of thecurve. The conjugate axis is a line perpendicular to the transverse axis,drawn from its centre, and of such a length that the diagonal of the rect-angle of the transverse and conjugate axes is equal to the distance betweenthe…
Mechanical engineering
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