Quantum Entanglement of Neutron Spin, Path and Energy

What does a quantum particle do when you are not looking at it? For a classical moving object, like a golf ball, we know its trajectory even when we are not looking at it. This...当我们未实施观测时，量子粒子 (quantum particle) 会展现出怎样的行为？对于诸如高尔夫球这类经典运动物体而言，即便我们未曾对其进行观测，我们依然能够明确获知其运动轨迹。This...