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Negative Effective Mass
by
Physics Frontiers
35m 44s
13,844
2
December 9, 2018
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EPISODE DESCRIPTION
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.