T. O. Engset

Tore Olaus Engset (May 8, 1865 in Stranda – October, 1943 in Oslo) was a Norwegian mathematician and engineer who did pioneering work in the field of telephone traffic queuing theory. [Arne Myskja, [http://www.telenor.com/telektronikk/volumes/pdf/2.1998/Page_154-164.pdf The man behind the formula. Biographical notes on Tore Olaus Engset] , in "Telektronikk" (Telenor research jnl.), 94(2):154-164]

Engset got a M.Sc. in physics and mathematics (1894) at University of Oslo, upon which hejoined Televerket as office worker, traffic analyst, and as director general (1921-22, 1930-35).He developed the Engset formula (1915) before the breakthroughs of
A. K. Erlang (1917). The unpublished report "Om beregningen av vælgere i et automatisk telefonsystem" (1915) were published later (1918).He also published works in nuclear physics (1927).

Publications

*"Die Wahrscheinlichkeitsrechnung zur Bestimmung der Wählerzahl in automatischen Fernsprechämtern", In Elektrotechnische Zeitschrift, Heft 31, 1918. Original manuscript (1915) also translated in Arne Myskja, " On the Calculation of Switches in an Automatic Telephone System". In "Telektronikk", 94(2):99-142, 1998
*"Die Bahnen und die Lichtstrahlung der Wasserstoffelektronen. Ergänzende Betrachtungen über Bahnformen und Strahlungsfrequenzen" (3 parts). In Annalen der Physik, 82 (1927) 1017; 83 (1927) 903; 84 (1927) 880.

References

Bibliography

*Arne Myskja: T. Engset in New Light. The 14th Nordic Teletraffic Seminar (NTS-14), Lyngby, Denmark, August 18-20, 1998.
*Arne Myskja: The Engset Report of 1915. Summary and Comments. Telektronikk, vol. 94, no. 2, pp. 143-153, 1998.
*Arne Myskja, Ola Espvik: Tore Olaus Engset - The man behind the formula. Tapir Academic Press, Trondheim, Norway, 2002. ISBN 8251918286.