Bilingual edition: English is preserved and Chinese follows each unit. Terminology uses the confirmed v20260916 glossary; automated semantic review remains traceable.
中英双语版：英文原文完整保留，中文紧随对应单元；术语采用 v20260916 确认表，自动语义审校结果可追溯。
Speed of Light, Physics 3901, Fall 04
光速，物理学3901，04年秋季
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The oscilloscope shows the signal from a photo-detector when the laser (white, lower right) is modulated by a 1 MHz signal from the signal generator.
示波器显示了当激光（白色，位于右下）由信号发生器发出的1 MHz信号调制时，光电探测器的信号。
Pathlengths of 11.5 and 18.1 meters were used. Both gave velocities of about 2.3 x 108 m/s for c. The measured times were 0.05 and 0.08 microseconds for the two cases.
使用了11.5米和18.1米的路径长度。两种情况都给出了约2.3×10⁸ m/s的光速。测量的时间分别为0.05和0.08微秒。
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c-Team Experimenters: Andrew Stallard, Jericho Cain, Leigh Buholtz, Saee Razi.
c-Team 实验人员：Andrew Stallard, Jericho Cain, Leigh Buholtz, Saee Razi.
Physics 3901
物理3901