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Chinese Sunspot Drawings and Their Digitizationâ€"(VII) Sunspot Penumbra to Umbra Area Ratio Using the Hand-Drawing Records from Yunnan Observatories.
- Source :
- Research in Astronomy & Astrophysics; Sep2022, Vol. 22 Issue 9, p1-8, 8p
- Publication Year :
- 2022
Details
- Language :
- English
- ISSN :
- 16744527
- Volume :
- 22
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Research in Astronomy & Astrophysics
- Publication Type :
- Academic Journal
- Accession number :
- 158562247
- Full Text :
- https://doi.org/10.1088/1674-4527/ac7f87