October 21, 20263 min read Add Us On GoogleAdd SciAmFor the first time, scientists can make quantum measurements on a positron particle kondensator / ShutterstockYou can’t hold antimatter in your hand or even in a regular laboratory apparatus. As soon as antimatter meets matter, the two tend to annihilate each other. This makes studying antimatter tricky. But now physicists have managed to trap a single subatomic particle of the stuff for months at a time in a way that allows them to study its q...