Negative Effective Mass
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Randy tells Jim about experiments with Neutrons and Photons in materials that exhibit negative effective mass. Not only do these effects show that the inertial mass of quasiparticles in a material can become negative, they show that these negative mass quasiparticles act like they have negative gravitational mass, as well.Show Notes: http://frontiers.physicsfm.com/39
Negative Effective Mass