A few days ago, I spotted a strange title on a physics paper, claiming to have produced negative mass. I gave it a read. No they didn’t, I thought to myself. I will not cover this interesting but esoteric cold atomic physics paper.
You learn about three or four phases of matter in school—solids, which have a shape and volume, liquids, which have a volume only, and gases and plasmas, which have neither a definite shape nor volume. But using the laws of physics, you can create incredible substances that behave nothing like the ones you learn about…
Though predicted to exist, magnetic monopoles — hypothetical elementary particles with only one magnetic pole — have never been detected by scientists. But physicists have just accomplished the next best thing by actually creating their own synthetic version of these bizarre magnetic particles in the lab.