Bizarre particle gains or loses mass depending on direction it travels
newatlas.com
Scientists have accidentally discovered a particle that has mass when it’s traveling in one direction, but no mass while traveling in a different direction. Known as semi-Dirac fermions, particles with this bizarre behavior were first predicted 16 years ago.
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The original was posted on /r/tech by /u/chrisdh79 on 2024-12-12 14:03:53+00:00.

Original Title: Scientists have accidentally discovered a particle that has mass when it’s traveling in one direction, but no mass while traveling in a different direction | Known as semi-Dirac fermions, particles with this bizarre behavior were first predicted 16 years ago.