Meissner, Walther

Meissner, Walther (1882-1974) and his graduate student Robert Ochsenfeld (1901-1993), both Germans working in Berlin, discovered in 1933 that a superconducting material repels a magnetic field— behaving as a perfect diamagnet. The effect became known as the Meissner (or Meissner-Ochsenfeld) effect... 

Walther-Meissner-Str. 6 85748 Garching, Germany e-mail Hauer muc.zae-bayem.de... 

Superconductivity dates back to 1911, when a Dutch physicist determined that the element mercury, when cooled to minus 452 degrees Fahrenheit, has virtually no electrical resistance. That is, it lost zero electric power when used as a means to distribute electricity from one spot to another. Two decades later, in 1933, a German physicist named Walther Meissner discovered that superconductors have no interior magnetic field. This property enabled superconductivity to be put to commercial use by 1984, when magnetic resonance imaging machines (MRIs) were commercialized for medical imaging. 

LMU Munich, Walther-Meissner-lnstitute of the Bavarian Academy of Science Center for Nano Science (CeNS) Walther-Meissner-Str. 8 85748 Garching... 

Walther-Meissner-Institut, 8046 Garching FRG ++ Sektion Physik LMU Munchen, 8000 Miinchen FRG... 

Walther-Meissner-Institut, D-8046 Garching, FRG ++ Max-PIanck-Institut fur Festkorperforschung, Hochfeld-Magnetlabor, F--38042 Grenoble, France... 

Meissner effect The falling off of the magnetic flux within a superconducting metal when it is cooled to a temperature below the critical temperature in a magnetic field. It was discovered by Walther Meissner (1882-1974) in 1933 when he observed that the earth s magnetic field was expelled from the Interior of tin crystals below 3.72 K, indi-... 

Quantimi Mechanics. By the mid-1920 s physicists had developed quantum mechanics, a powerful new theory explaining the behavior of electrons in atoms. Different forms of quantum mechanics emphasized electrons as particles (matrix mechanics) and electrons as waves (wave mechanics), and these theories were eventually shown to be equivalent. Quantum mechanics proved very successful for understanding ionic and covalent crystals, organic chemical molecules, and many other physical and chemical phenomena, but it proved unable to unlock the mysteries of superconductivity. However, in 1933 German physicist Walther Meissner discovered a superconductor s ability to repel magnetism, which provided a clue to understanding superconductivity, since study of the Meissner effect showed how transitions from normal to superconducting states are thermodynamically reversible. Other studies helped explain some of the... 

---