SOUTHPAW NEUTRINOS
Scientists at Brookhaven National Laboratory used a tabletop experiment to prove that neutrinos are always left-handed (the direction of their spin is the opposite direction of their motion). For a few thousand dollars, Maurice Goldhaber, Lee Grodzins, and Andrew Sunyar conducted the experiment over two weeks. Scientists have only seen left-handed neutrinos and right-handed antineutrinos to this day.
