Reference numberEL/C2/2
TitleJuan Cruzado to Henry Oldenburg
CreatorCruzado; Juan (fl 1675)
Date10 December 1675
DescriptionCruzado discusses points made in his letter of (EL/C2/1). These are:
- a new place for the prime meridian
- testing the equal revolution of the natural day with his pendulum clock
- ascertaining the moon's place on land and at sea
- the longitude of Seville from observations of the lunar eclipse and Tychonic tables
Read to the Royal Society on 28 October 1675
Extent4.5 sides
Access statusOpen
Related materialTranscribed in LBO/7/272
Transcribed and translated in 'The correspondence of Henry Oldenburg', ed and trans by A Rupert Hall and Marie Boas Hall, vol 12, p 69
Printed in 'Philosophical Transactions', vol 10, no 118, p 429
URL descriptionAlso available on Early Modern Letters Online
Fellows associated with this archive
NA8001Oldenburg; Henry (c1619 - 1677); scientific correspondentc1619 - 1677
Add to My Items

    Collection highlights

    Browse the records of some of our collections, which cover all branches of science and date from the 12th century onwards. These include the published works of Fellows of the Royal Society, personal papers of eminent scientists, letters and manuscripts sent to the Society or presented at meetings, and administrative records documenting the Society's activities since our foundation in 1660.

    The Royal Society

    The Royal Society is a Fellowship of many of
    the world's most eminent scientists and is the
    oldest scientific academy in continuous existence.
    Registered charity number 207043

    Website design ©CalmView


    + 44 207 451 2500
    (Lines open Mon-Fri, 9:00-17:00. Excludes bank holidays)

    6-9 Carlton House Terrace, London SW1Y 5AG

    Email Us →


    Subscribe to our newsletters to be updated with the
    latest news on innovation, events, articles and reports.

    Subscribe →

    © CalmView