Parallax Is

question 105

Multiple Choice

Parallax is

• A)the apparent motion of an object due to the motion of the observer.
• B)the distance between two foci of an ellipse.
• C)the small circle that the planets slid along in Ptolemy's geocentric universe.
• D)the circular orbits used in Copernicus' heliocentric universe.
• E)half the length of the shortest diameter of an ellipse.

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