T. O. Engset

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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.^[1]

Engset got a M.Sc. in physics and mathematics (1894) at University of Oslo, upon which he joined 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 The unpublished report Om beregningen av vælgere i et automatisk telefonsystem (1915) were published later (1918).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).

[edit] 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.

[edit] References

[edit] 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.