1989
Award ceremony speech
Award ceremony speech
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…
morePrecision measurements using atomic beams and ion traps
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…
moreSome precision data obtained by ion traps and atomic beams
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…
moreFurther reading
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…
moreThe Nobel Prize in Physics 1989
The Royal Swedish Academy of Sciences has awarded this year’s Nobel Prize in Physics for contributions of importance for the development of atomic precision spectroscopy Hans Dehmelt University of Washington Seattle, USA Wolfgang Paul Universität Bonn Federal Republic of Germany Norman F. Ramsey Harvard University Cambridge, USA for the development of…
morePress release
Press release
12 October 1989 has decided to award the 1989 Nobel Prize in Physics for contributions of importance for the development of atomic precision spectroscopy with one half to Professor Norman F. Ramsey, Harvard University, Cambridge, MA, USA, for the invention of the separated oscillatory fields method and its use in the hydrogen maser and other…
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