| RefNo | HS/17/175 |
| Level | Item |
| Title | Copy letter, from Giovanni Virginio Schiaparelli to Robert Philips Greg |
| Creator | Giovanni Virginio Schiaparelli |
| Date | 1 April 1868 |
| Description | Copy letter with illustration and tables of positions, annotated and copied by Alexander Stewart Herschel. Discussing Greg and Alexander Stewart Herschel's theories of the trajectory of rays and in particular the fixity of radiants which Schiaparelli had computed and Greg and Herschel are proposing new hypothesis for. Includes an illustration, "Figure of the annual route taken by a ray in the boreal exliptic hemisphere, according to hypothesis 3". News of other comet observers in Italy, including Giuseppe Zezioli (c. 1830-1870) from the Telegraphic Bureau in Bergamo. Letter sent to be shared with Alexander Herschel |
| Language | French |
| Extent | 6 pp. |
| Place origin | Milan; Italy |
| Origin coordinates | 45.466944, 9.19 |
| Digital images | View item on Science in the Making |
| AccessStatus | Open |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA6670 | Herschel; Alexander Stewart (1836 - 1907); astronomer | 1836 - 1907 |
| NA554 | Schiaparelli; Giovanni Virginio (1835 - 1910) | 1835 - 1910 |