与时间赛跑：相对论中的时间膨胀是真实的吗？

Against the clock Is time dilation real? Einstein thought so, but he also thought it is an apparent phenomenon related to our perception. Karmela Padavic-Callaghan looks at why he was right both times The passage of time often seems like the most malleable thing in the world. A minute may feel much longer when you’re asked to hold a plank position in a workout class, and an hour may fly by when you’re chatting with a friend. In these cases, your perception of time is altered. But real, physical time dilation also happens. …