| RefNo | HS/18/356 |
| Level | Item |
| Title | Letter, from Thomas Young to Sir John Herschel, dated at Park Square |
| Creator | Thomas Young |
| Recipient | John Frederick William Herschel |
| Date | 1826 to 1829 |
| Description | Autograph letter signed by sender. Resolved puzzle about sidereal year, which needs better definition. Error between true and nominal positions prevents Thomas Young adopting 'equinoctial time' for chronology investigations. |
| Language | English |
| Extent | 2pp |
| Format | Manuscript |
| Place origin | Park Square, London |
| Origin coordinates | 51.524, -0.147 |
| Digital images | View item on Science in the Making |
| AccessStatus | Open |
| URLDescription | Also available on Epsilon |
| URL | https://epsilon.ac.uk/view/herschel/letters/Herschel8090
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