parallax

Part of speech: noun

An apparent displacement of an object due to change of an observer's position.

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Usage examples "parallax":

  1. Lastly, there is a sort of parallax effect, owing to the fact that we see the rising moon from one point of view, and the setting moon from a point 8, 000 miles distant; and this base- line of the earth's diameter gives us again some extra glimpses. - "Pioneers of Science", Oliver Lodge.
  2. For such large distances the secular parallax, which is caused by the progressive motion of the sun in space, may give better results, especially if the mean distance of a group of stars is simultaneously determined. - "Lectures on Stellar Statistics", Carl Vilhelm Ludvig Charlier.
  3. For the new method he noticed that great accuracy was required in the reduction of the observed places of Mars to the ecliptic, and for this purpose the value obtained for the parallax by Tycho's assistants fell far short of the requisite accuracy. - "Kepler", Walter W. Bryant.