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Abstract: This paper shows a traditional Rubidium atomic clock — XHTF1031. The incorporate lamp and ultra-miniature waveguide cavity introduced in the physics package is the main means to downsize the ...

Abstract: The proposed space mission mini Space-Time Asymmetry Research (mSTAR) aims at a test of special relativity by performing a clock-clock comparison experiment in a low-Earth orbit. Using ...

We’ve seen a few H-bridge circuits around these parts before, and here’s another application. This time we have an Old Train ...