Abstract
IN his studies of cosmical electrodynamics, Alfvén1 has demonstrated the existence of magneto-hydrodynamic waves in an ionized gas situated in a magnetic field. They are transverse waves and are propagated only in the direction of the magnetic field. Their velocity is H (4πµ)−½, where H is the magnetic field and µ is the mass density. The mass velocity of the gas is equal to the varying transverse part of the magnetic field divided by √(47πµ).
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References
Alfvén, H., “Cosmical Electrodynamics”, chapter 4 (Oxford University Press, 1950).
Bailey, V. A., Aust. J. Sci. Res., A, 1, 351 (1948).
Åström, E., Nature, 165, 1019 (1950).
Herlofson, N., Nature, 165, 1020 (1950).
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DUNGEY, J. Derivation of the Dispersion Equation for Alfvén's Magneto-Hydrodynamic Waves from Bailey's Electromagneto-Ionic Theory. Nature 167, 1029–1030 (1951). https://doi.org/10.1038/1671029a0
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DOI: https://doi.org/10.1038/1671029a0
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