Describe how sextant can be used to determine the angle of elevation of a star.
Describe how sextant can be used to determine the angle of elevation of a star.
- A sextant consists of a fully silvered mirror M1which can be rotated about a horizontal axis and a fixed half silvered mirror B.
- Mirror M1 is adjusted to become parallel to B by rotating it until the image of the horizon, H’ is seen directly through the unsilvered part of mirror B by successive reflection in mirror M1 and B respectively
- The mirror M1 is rotated to position M2 such that the image of the horizon H, and the stat coincides at H’
- The angle of rotation is measured from the scale on the instrument. The elevation of the sun is 2θ.
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What about an angular scale isn’t t involved
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Goodmrning, am waiswa andrew frm tororo and am studyng physics, entreprenureshp and math at a’level and i wold lyk u pople to join me in. Thanks i hve learnt how a sextant works.
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