| RefNo | EL/C1/50 |
| Level | Item |
| Title | Letter, from Jean Dominique Cassini to Henry Oldenburg, dated at Paris |
| Creator | Cassini; Jean Dominique (1625-1712); Italian/French mathematician; astronomer; engineer; astrologer |
| Date | 10 June 1669 |
| Description | Cassini states that he has pushed forward the ephemerides of the 'Medicean stars' (Jupiter's moons)
A paper by Nicholas Mercator is attached which considers Cassini's geometrical and direct method for finding the anomalies of the planets. Figures and mathematical formulae are attached
Oldenburg has written a note on the back of the paper about Dr Wren promising Collins the direct method for dividing the area of an ellipse and a table method for finding the length of the ellipse
Mercator's paper originally published by the Journal des Scavans is printed in 'Philosophical Transactions', vol 5, no 57, p 1168
Read to the Royal Society on 16 June 1669 |
| Language | Latin |
| Extent | 23p |
| Format | Manuscript |
| Place origin | Paris, le-de-France, France |
| Origin coordinates | 48.85341, 2.3488 |
| Digital images | View item on Science in the Making |
| AccessStatus | Open |
| RelatedMaterial | DOI: 10.1098/rstl.1670.0018 |
Transcribed in LBO/3/54
Letter is transcribed and translated in 'The correspondence of Henry Oldenburg', ed and trans by A Rupert Hall and Marie Boas Hall, vol 5, p 576 |
| RelatedRecord | LBO/3/54 |
| URLDescription | Also available on Early Modern Letters Online |
| URL | http://emlo.bodleian.ox.ac.uk/profile/work/7cb5d889-afdc-4852-a9e2-324ffc76c839 |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA8001 | Oldenburg; Henry (c1619 - 1677); scientific correspondent | c1619 - 1677 |
| NA8383 | Cassini; Jean Dominique (1625 - 1712); astronomer | 1625 - 1712 |
| NA7751 | Mercator; Nicolas (c 1620 - 1687); mathematician and astronomer | c 1620 - 1687 |