The ancient portable sundial of Choma
A new type of portable ancient sundial was discovered during excavations in Turkey in 2011, at the ancient city of Choma. Designed to function at the latitude of Alexandria, it is a small-sized instrument that still retains its fixed gnomon. In addition to a previously unseen geometric layout for an unequal-hour sundial, the hour lines are numbered from 1 to 12. Its dating is estimated to be between the second century and the beginning of Byzantine period.
Authors
- Ünal Demirer (ORCID: https://orcid.org/0000-0002-2988-0369)
- Denis Savoie (ORCID: https://orcid.org/0000-0002-3305-1846)
Institutions
- Université de Lille (FR)
- Sorbonne Université (FR)
- Burdur Mehmet Akif Ersoy Üniversitesi (TR)
Publication Details
- Journal
- Journal for the History of Astronomy
- Published
- 2025-10-31
- DOI
- https://doi.org/10.1177/00218286251353246
- Primary Topic
- Historical Astronomy and Related Studies
- Type
- article
- Field-Weighted Citation Impact
- 0.00