Explain parallax mathod in detail and prove it scientifically???
Answers
Answer:
- Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines.
Correction of parallax error:
- If two objects are placed at the same distance from the eye, there will be no relative shift between them. If they are at different distances, the nearer object moves in a direction opposite to that of the eye and farther one in the same direction. Once their relative positions are known, they can be brought to one position by suitable shifting. When the two objects occupy the same position in space with respect to the eye, then the apparent shift disappears and it is said that the parallax error has been removed.
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Answer:
Astronomers estimate the distance of nearby objects in space by using a method called stellar parallax, or trigonometric parallax. Simply put, they measure a star's apparent movement against the background of more distant stars as Earth revolves around the sun.
Parallax is “the best way to get distance in astronomy,” said Mark Reid, an astronomer at the Harvard Smithsonian Center for Astrophysics. He described parallax as the “gold standard” for measuring stellar distances because it does not involve physics; rather, it relies solely on geometry.
The method is based on measuring two angles and the included side of a triangle formed by the star, Earth on one side of its orbit and Earth six months later on the other side of its orbit, according to Edward L. Wright, a professor at the University of California, Los Angeles.