Experimental Demonstration of Magneto-hydrodynamic Waves

Details Experimental Demonstration of Magneto-hydrodynamic Waves Experimental Demonstration of Magneto-hydrodynamic Waves

Jul 1949

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1949natur.164..145l&link_type=abstract

Nature, Volume 164, Issue 4160, pp. 145-146 (1949).

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Scientific paper

IN an electrically conducting liquid placed in a magnetic field, there is a mutual interaction between electromagnetic and hydrodynamic forces. Alfvén1 has shown that this interaction may cause a new type of waves, called magneto-hydrodynamic waves, which travel in the liquid in the direction of the outer magnetic field, carrying an induced magnetic field as well as a velocity field with them. It seems probable that they are ofgreat importance in solar physics, especially for the theory of sunspots. They may be important also in other branches of cosmical physics. They have not hitherto been observed in the laboratory; but an experimental investigation is very desirable, especially as many problems connected with waves are very difficult to treat theoretically.

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