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On Monday, May 7, 2007, Jacobs University Bremen in co-operation with the Deutsche Schiffsbank (German Shipping Bank) cordially invites the interested public to the talk »How long is 1 Meter?«. Klaus von Klitzing, Director at the Stuttgart Max Planck Institute for Solid State Research and 1985 Physics Nobel laureate, will give an overview on the history and the latest findings on determining measuring units. Von Klitzing’s visit on-campus is part of the lecture series »Science leaders meet Jacobs University«. There is no entrance fee.
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May
04, 2007]
Time: Monday, May 7, 2007, 7.30 p. m.
Venue: Jacobs University | Campus Center | Conference Hall
Subsequently to the talk a reception by the Deutsche Schiffsbank provides the opportunity for discussions with the high ranking scientific guest.
About the talk:
Length measurements are – together with time and mass measurement – of fundamental importance to science, economy, and industrial developments. In his talk the physicist v. Klitzing will survey the development of these units, starting with an historical overview and finishing with the most recent developments that take fundamental physical constants into account as the basis to define measuring units independently from time and space. For these modern aspects of “measuring the world“, the Quantum Hall effect, which represents a certain type of electrical resistance, plays a crucial role and may even be important for a new definition of the measuring unit kilogram for mass.
Prof. Dr. Klaus von Klitzing:
After studying physics in Braunschweig, von Klitzing spent 10 research years at University Würzburg (Ph.D. thesis 1972 on "Galvanomagnetic Properties of Tellurium in Strong Magnetic Fields", habilitation 1978), with research work at the Clarendon Laboratory, Oxford and High Magnetic Field Laboratory, Grenoble. Von Klitzing became professor in Munich in 1980. Since 1985, von Klitzing is a director at the Max Planck Institute for Solid State Research in Stuttgart.
The von Klitzing constant RK is named in honor of Klaus von Klitzing's discovery of the Quantum Hall Effect, for which he received the Nobel Prize in 1985. Since 1990 the constant is listed on The National Institute of Standards and Technology Reference on Constants, Units, and Uncertainty to define the unit Ω for measuring electrical resistance. The constant gives the inverse value of one quantum of electrical conductance. As it is defined by the two natural physical constants, the Planck’s constant h and the electrical charge of an electron e, the von Klitzing constant is a fundamental physical constant itself.
Klaus von Klitzing holds multiple honorary degrees and has received many awards for his scientific work. He is a passionate advocate of fundamental research and never tires of spreading enthusiasm and curiosity for physics. He is the eponym and jury member of the Klaus-von-Klitzing Prize, a prize to nurture dedicated teachers of natural sciences.
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