This definition appears very rarely
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Samples in periodicals archive:
Priza claims that current physics are not complete and there is almost no understanding of physics beyond the speed of light (super-optic range).
You will see the stars in the sky start disappearing as they accelerate beyond the speed of light.
The spectacular aspect of such a detectable neutrino beam would be less the discovery that neutrinos may be actually tachyons, but of an information speed beyond the speed of light barrier.