* Astronomy

Klaus von Klitzing (28 June 1943 in Schroda) is a German physicist known for discovery of the integer quantum Hall Effect, for which he was awarded the 1985 Nobel Prize in Physics. 
The von Klitzing constant, RK = h/e² = 25,812.807449(86) omega, is named in honour of von Klitzing's discovery of the quantum Hall effect, and is listed in the National Institute of Standards and Technology Reference on Constants, Units, and Uncertainty. The inverse of the von Klitzing constant is equal to half that of the conductance quantum value. 
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Entrevista do Prof. Klaus Von Klitzing