Question

how will you measure diameter of the moon by using parall method​

Answer 1

Answer:

The diameter of the moon is to be calculated by the parallax method, by assuming two points serving as the diameter ends and define the angle made by it on earth and assume the parallel shortest distance. Apply tangent and trigonometry to infer the finding.

Explanation:

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Answer 2

Answer:

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The diameter of the moon is to be calculated by the parallax method, by assuming two points serving as the diameter ends and define the angle made by it on earth and assume the parallel shortest distance. Apply tangent and trigonometry to infer the finding.

• Let moon be the astronomical object of diameter D. Let E be the point on earth's surface.
• A telescope is focused on moon's surface and its image is observed as shown in figure is measured.
• S is the distance between moon and the Earth's surface.
• The diameter AB of moon is considered as a circular arc of radius S.
• Diameter of the moon can be found by knowing q and S.

This above formula holds good only if S is very large and D can be considered as a small arc of radius S.