相对论运动的快照：可视化 Terrell 效应
A Snapshot of Relativistic Motion: Visualizing the Terrell Effect
AI总结：
本文利用飞秒激光脉冲与300 ps门控增强相机将光速虚拟降至2 m/s以下，实时重建 Lorentz 收缩物体的视觉外观，首次在实验室拍摄并验证 Terrell 效应。
摘要：
我们展示了 Terrell 效应的实验可视化，这是 Roger Penrose 与 James Terrell 于1959年预言的一种光学现象，揭示运动物体的 Lorentz 收缩在快照照片中并不可见。利用飞秒激光脉冲以及最短门控时间可达300 ps的门控增强相机，我们实现了将光速虚拟降低至2 m/s以下，从而能够实时可视化相对论性运动物体。通过捕获从经过刻意 Lorentz 收缩的物体反射的光，我们的装置有效重建了它们的视觉外观。这一教学性可视化不仅纪念 Anton Lampa 于1924年发表的关于相对论性长度收缩的开创性论文一百周年，也首次在实验室装置中提供了 Terrell 效应的实验证据。我们的结果包括详细的相对论图示、模拟，以及球体和立方体的摄影快照；这些物体被动画化至接近光速的速度，揭示了相对论理论所预言的表观旋转效应和畸变。
英文摘要：
We present an experimental visualization of the Terrell effect, an optical phenomenon predicted in 1959 by Roger Penrose and James Terrell, which reveals that the Lorentz contraction of a moving object is not visible in a snapshot photograph. Using fs-laser pulses and a gated intensified camera that allows gating times as short as 300 ps, we achieve a virtual reduction of the speed of light to less than 2 m/s, enabling the visualisation of relativistically moving objects in real time. By capturing light reflected from deliberately Lorentz-contracted objects, our setup effectively reconstructs their visual appearance. This didactic visualization not only commemorates the centennial of Anton Lampa's seminal 1924 paper on relativistic length contraction but also provides the first experimental evidence of the Terrell effect in a laboratory setup. Our results comprise detailed relativistic illustrations, simulations and photographic snapshots of a sphere and a cube, which are animated to velocities close to the speed of light, revealing the apparent rotation effect and the distortion predicted by relativistic theory.
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