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Hadley, John, 1682 - 1744 (natural philosopher and mathematician)

 Person

Found in 5 Collections and/or Records:

 File

Account of Hadley's quadrant

Reference Code: GBR/0180/RGO 4/295
Scope and Contents

An undated account of John Hadley's quadrant and its capabilities and effectiveness for observations at sea.

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).
 File

Confirmed minutes, 1780 - 1801

Reference Code: GBR/0180/RGO 14/6
Scope and Contents Minutes of Board of Longitude meetings regarding, among other matters, the rates of various chronometers; Charles Hutton's tables of products, powers and roots of natural numbers; the voyages of HMS 'Resolution' and HMS 'Discovery' and the examination of their log books; John Arnold's improvements to his watches; a suitable site for the Board of Longitude's instruments after the burning of the cupola of the Greenwich Hospital where they had been kept; improvements to reflecting telescopes;...
Dates: 1780 - 1801
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).
 File

Journal of voyage to St Helena, 1761-01-21 - 1761-04-06

Reference Code: GBR/0180/RGO 4/150
Scope and Contents 'Journal of a voyage from England to St Helena, Ship Prince Henry, East India Man, Charles Haggis, Commander' A record of the observations and calculations carried out by the astronomer Nevil Maskelyne on his voyage to the island of St. Helena. It is a mix of rough and neat observations from the journey and opens with tightly-packed calculations and notes to himself. This is followed by neatly set-out tables of daily entries which run from 21 January to 6 April 1761 (when the...
Dates: 1761-01-21 - 1761-04-06
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).
 File

Nautical astronomy, 1770 - 1810

Reference Code: GBR/0180/RGO 4/196
Scope and Contents

A set of loose pages dealing with problems in ascertaining latitude and longitude at sea by observation of the stars, with descriptions, computations and formulae referred to apparent time. There are also sections on finding the Moon's longitude from the nautical ephemeris [RGO 4/196: 1r], the motion of the Sun's image in a Hadley quadrant [RGO 4/196: 2r], and the testing of other people's hypotheses.
It is not known if the papers are foliated in their original order.

Dates: 1770 - 1810
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).
 Item

Observations on Point Venus in the island of Otahitee [Otaheite/Tahiti], 1774-04-22 - 1774-05-10

Reference Code: GBR/0180/RGO 14/59/2: 13r-15v
Scope and Contents

These include daily observations; Azimuths of the sun; lunar observations; observations for the line of collimation of the quadrant; observations for the latitude of Point Venus by Hadley’s Quadrant; observations for the dip of the needle; observations for the going of the clock; observations for the going of Mr Kendall’s watch; and observations for the latitude of Point Venus.

Dates: 1774-04-22 - 1774-05-10
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).

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Astronomy 2
Australia 1
Botany Bay 1
East Indies 1
Geographical exploration 1

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