The Physical Review Letters Journal is reporting on an amazing research paper by scientists who’ve created Negative Mass allowing something which is pushed to then accelerate towards you, thereby breaking Isaac Newton’s Second Law of Motion. A short article in the BBC explains how by cooling rubidium atoms to just above the temperature of absolute zero (close to -273C), created what’s known as a Bose-Einstein condensate. Then in this state with particles moving extremely slowly, and following behaviour predicted by quantum mechanics, they acted like waves. They also synchronised and moved together in what’s known as a superfluid, which flows without losing energy.
To create the conditions for a negative mass, the researchers had used lasers to trap the rubidium atoms and to kick them back and forth, changing the way they spun. When the atoms were released from the laser trap, they expanded, with some displaying negative mass.