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.

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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  • comment-avatar
    Mathias r 3 years

    What about an angular scale isn’t t involved

  • comment-avatar
    WAISWA ANDREW 2 years

    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.

  • comment-avatar
    NAMBAJIMANA YONAS 1 year

    u drop here the tips of passing P510/2

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    Nganda Amos 7 months

    Thanks.can I get the Note on My what’s up number 0709928868

    • comment-avatar

      download free notes from digitalteachers.co.ug. Load digitalteachers.co.ug in google, tap the three horizontal lines on the top left, then science subjects and follow the prompts

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