Question

define parallax . disscuss angular method to determine the diameter of a planet​

Answer 1

Answer:

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Explanation:

Measurement of Large Distances 

Length: It is defined as the difference between two positions taken by two events that occur instantly. 

(i) Parallax Method: When an object is seen by closing our right and left eye alternatively, there is a shift in the position of the object w.r.t. the background observed. This is known as parallax. 

Answer 2

the effect whereby the position or direction of an object appears to differ when viewed from different positions, e.g. through the viewfinder and the lens of a camera.

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