A speed measuring system of moving mirror for Fourier transform spectrometer (FTS) based on FPGA is introduced.

介绍了一种基于FPGA的傅里叶变换光谱仪动镜速度测量系统。

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The Michelson interferometer system which has two-beam interference is applied in Fourier Transform interferometer, the moving mirror could tilt in three directions in motion.

采用了双光束干涉的迈克尔逊干涉仪系统的傅里叶变换红外光谱仪，在动镜运动过程中，动镜可能在三个方向发生倾斜。

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The illusion created by the mirror gives him the impression that both of his hands are, indeed, moving.

镜子造成的幻象让病人觉得他的两只手的确在动。

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They then seemed to be checking whether the elephant in the mirror exactly copied their own actions by rhythmically moving their heads in and out of view.

ECONOMIST: Self-recognition

Now, as we see a little gray in the mirror -- or a lot of gray -- and we watch our children moving into adulthood, we ask the question: What will be the state of their union?

CNN: Transcript of State of the Union