Physics - Optics - Parallax

Gap-Filling Quiz

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No Parallax Explained
Parallax is the displacement of an object caused by an actual change in the position of the .
Hold your thumb at arm’s length and view its position to a point on the wall with your left eye only. Now view it with your eye only. Its relative position has . Hold up both thumbs, one in front of the other, and repeat the . The relative positions will change except in the case where the thumbs are .
If the position of no-parallax is found between two objects, or two images, then they must be in exactly the position.