Letter, from Henry Oldenburg to John Cruzado, dated at London

Reference number: EL/O2/161

Date: 03 February 1676

Description

Transcribes Flamsteed's reply to Cruzado's letter concerning the prime meridian, the equation of time, the investigation of longitude, about a small instrument to aid observations with the accuracy of two or three minutes; that Jonas Moore had become a patron of astronomy and so possibly an observatory would be built.

Table attached with 'equations of apparent time (as mentioned above) the Earth's aphelion being in the seventh degree of Capricorn, which may serve throughout this century, interpolating the sun's true place'.

Reference number: EL/O2/161
Earliest possible date: 03 February 1676
Page extent: 8 pages
Format: Manuscript
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Creator name

Henry Oldenburg

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Citation

Henry Oldenburg, Letter, from Henry Oldenburg to John Cruzado, dated at London, 03 February 1676, EL/O2/161, The Royal Society Archives, London, https://makingscience.royalsociety.org/items/el_o2_161/letter-from-henry-oldenburg-to-john-cruzado-dated-at-london, accessed on 12 December 2024

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https://makingscience.royalsociety.org/items/el_o2_161/letter-from-henry-oldenburg-to-john-cruzado-dated-at-london

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This item is part of:

'Early letters': letters from correspondents in natural philosophy sent to the Royal Society and its Fellows
1613-1740 Reference number: EL
Early Letters O2
1669-1736 Reference number: EL/O2

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Henry Oldenburg
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Early Letters

Dates: 1613-1740

The archival collection known as 'Early Letters' is composed of original manuscript letters sent to, or collected by, the Royal Society from English and foreign correspondents.

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