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Measurement of a meridional arc, 1800 - 1803

 File
Reference Code: GBR/0180/RGO 4/112

Scope and Contents

Measurement of a meridional arc from Trivandeporum to Paudree, India, and of the arc perpendicular to the meridian. The volume includes accounts, observations and experiments performed by Brigade Major William Lambton on the latitude 12º32'N.

1. An account of the measurement of the base line and an explanation and experiments performed on the chain and their comparative lengths.

2. Commencement of the operations from the base: the large theodolite.

3. Angles taken with the large theodolite, 27 September 1802 - 13 April 1803.

4. Triangles.

5. Reduction of the distances to the meridian of Trivandeporum for determining the length of the terrestrial arc.

6. Observations with the zenith sector for the latitude of Paudra.

7. Observations of the Pole Star and the length of a degree perpendicular to the meridian.

8. Size of the Earth deduced from the data and a map of the meridians used.

9. Postscript.

















Dates

  • Creation: 1800 - 1803

Creator

Conditions Governing Access

From the Management Group:

Unless restrictions apply, the collection is open for consultation by researchers using the Manuscripts Reading Room at Cambridge University Library. For further details on conditions governing access please contact mss@lib.cam.ac.uk. Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (www.lib.cam.ac.uk).

Extent

1 volume(s) (1 volume)

Language of Materials

English

Former / Other Reference

A2/412

Finding aid date

2005-11-07 09:20:57+00:00

Includes index.

Geographic

Repository Details

Part of the Cambridge University Library Repository

Contact:
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