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Parallax (disambiguation) : ウィキペディア英語版 | Parallax (disambiguation)
A parallax is the difference in the angular position of two stationary points relative to each other from different viewing positions. Parallax may also refer to: ==Astronomy==
*Parsec (pc), parallax of one arcsecond with a baseline of 1 AU, and equal to 3.26 light years. *Dynamical parallax, a method of measuring the distance to a visual binary star *Photometric parallax method *Spectroscopic parallax *Stellar parallax, uses actual geometric parallax to determine distance
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