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I was born August 27, 1915 in Washington, D.C. My mother, daughter of German immigrants, had been a mathematics instructor at the University of Kansas. My father, descended from Scottish refugees and a West Point graduate, was an officer in the Army Ordnance Corps. His frequently changing assignments took us from Washington, DC to Topeka,…

    The works of Wolfgang Paul, which led to the Paul trap, are based on investigations of the properties of electric and magnetic so called multipoles. A common magnet has two poles and is called a dipole, one with four poles, a quadrupole, one with six, a hexapole etc. Paul has shown that a…

Editors: Professor Ingmar Bergström, Manne Siegbahn Institute of Physics, Frescativägen 24, S-104 05 Stockholm, Sweden Dr Torbjörn Olsson, Department of Physics, Royal Institute of Technology, S-100 44 Stockholm, Sweden Illustrator: Karin Feltzin, Stockholm Printed by: Tryckindustri 1989. Copyright © , Information Department, Box 50005, S-104 05 Stockholm, Sweden, Tel. +46-8-673 95 00, Fax +46-8-15 56…

Presentation Speech by Professor Ingvar Lindgren of the Translation from the Swedish text Your Majesties, Your Royal Highnesses, Ladies and Gentlemen. This year’s Nobel Prize in Physics is shared between three scientists, Professor Norman Ramsey, Harvard University, Professor Hans Dehmelt, University of Washington, Seattle, and Professor Wolfgang Paul, University of Bonn, for “contributions of importance…

Physics has the ambition to discover the laws of nature. The predictions of these laws must be checked by accurate experiments. Even very small deviations are of great principal importance and require the highest possible precision in the measurements. The laws of physics are directly or indirectly based on quantities such as mass, length, time…

1. Comparison of masses m(p+/m(e-) = 1 836.152 701 +37×10-6 m(CO+)/m(N2+) = 0.999 598 8876 +4xl0-10 2. Test of the validity of quantum electrodynamics — The magnetic dipole moment of the electron 1/2 g(e-) = 1.001 159 652 188 +4xl0-12 — Nuclear spin frequencies (Hz) 1H 1 420 405 751.768 +2xl0-3 2H 327 384 352.5222…

The Nobel Prize laureates are presented in Nature, 19th October, and Science, 20th October, 1989 “First trap your atom”, Richard Thompson, New Scientist, Vol 115, no 1576, pp 56-59, 1987 (On ion traps, laser cooling, quantum jumps, etc) “Laser spectroscopy of trapped atomic ions”, W.M. Itano, J.C. Bergquist & D.J. Wineland, Science, Vol 237, pp…

Contents: Based on materials from the 1989 Nobel Poster for Physics.

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