Nutshell tables of mathematical functions for interpolation with calculating machines

Hirvonen, R. A.

doi:10.1007/bf02529087

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1984

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“…The former commenced in latitudes 10°, 40°,70°, with azimuths 0°, 45°, 90°at each point. Ten-figure computations were made with the reverse formula (5) over two of these lines, using the nutshell tables given by Hirvonen (1953) and an electric desk calculator; these gave errors of 1/130M and 1/64M respectively. However, the latitudes and longitudes were given to 0" ·001 only; a discrepancy of 0" ·0005 gives an error in distance of N/400M = 1/IOOMof 1000 miles and the root sum of the squares of 1/IOOM,1/100Mand l/lS0M~1/70M.…”

Section: Whencementioning

confidence: 99%