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This sand grain made of volcanic glass is isotropic, and thus, stays extinct when rotated between polarization filters on a petrographic microscope
This sand grain made of volcanic glass is isotropic, and thus, stays extinct when rotated between polarization filters on a petrographic microscope
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A plasma globe displaying the nature of plasmas, in this case, the phenomenon of "filamentation"
A plasma globe displaying the nature of plasmas, in this case, the phenomenon of "filamentation"