In Search of the Lost Sun: The Viking Sun Stone and Its Legacy in Ancient Navigation
Keywords:
Sunstone, Compass, Fog, Navigation, Solar PositionAbstract
Deciphering ancient navigation methods has long intrigued scientists and historians. This study explores the use of a Sunstone, an ancient Viking tool, alongside a compass to determine solar positions under various weather conditions, particularly fog. The objective was to understand how different atmospheric conditions impact solar position detection and its implications for modern applications.
The study was conducted at the San Juan Reservoir, located in the municipality of San Martín de Valdeiglesias in the Community of Madrid, Spain. Calcite was used as the solar stone due to its ability to polarize light. Two different routes around the reservoir were undertaken under sunny and cloudy weather conditions. A single route was conducted under light, moderate, and dense fog conditions, followed by rigorous statistical analysis.
Under clear skies, Sunstone readings correlated positively with solar intensity, while compass readings remained consistent. However, the study's key findings emerged under foggy conditions. Despite a decrease in observed solar intensity as fog density increased, the Sunstone demonstrated a resilient capability to discern solar positions consistently. Statistical analyses revealed a moderate positive correlation between observed intensity and solar position in light fog, which diminished with denser fog.
These findings have significant implications for navigation and solar energy planning, emphasizing the need to consider atmospheric conditions when using ancient navigation tools in modern contexts. This research highlights the challenges and potential of applying these ancient methods today, forming a foundation for further studies and practical applications.
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Al-Masudi, A. A. H. A. (1989). Muruj adh-Dhahab wa Ma’adin al-Jawhar [The Meadows of Gold and Mines of Gems] (P. Lunde & C. Stone, Trans.). London, UK: Kegan Paul International. (Original work published 947)
Arnold, M. (2006). How we used to navigate: A short history of navigation. Cheltenham, UK: The History Press.
Bately, J. (2013). The old english Orosius. Oxford, UK: Oxford University Press.
Crumlin-Pedersen, O. (Ed.). (1997). Viking-age ships and shipbuilding in Hedeby/Haithabu and Schleswig. Roskilde, Denmark: Viking Ship Museum.
Davidson, H. E. (1981). The lost beliefs of Northern Europe. Abingdon, UK: Routledge.
Evans, A. (2019). The Edge of the World: How the North Sea Made Us Who We Are. New York, NY: Random House.
Fadlan, I. (2012). Ibn Fadlan and the land of darkness: Arab travellers in the far north (P. Lunde & C. Stone, Trans.). London, UK: Penguin. (Original work published c. 921)
Fitzhugh, W. W. (2000). Vikings: The north Atlantic Saga. AnthroNotes, 20(1). Retrieved from https://repository.si.edu/bitstream/handle/10088/22476/anthronotes_2000_22_1_1.pdf
Gade, K. (1997). The Norse discovery of America. Worcester, MA: The Antiquarian Society.
Glessner, J. J. G. (2019). The Sunstone: Labradorescence and polarization of light. JON-Journal of Optics and Nature, 2(3), 131-142.
Hafsteinsson, S. (2002). Norsemen in Iceland: Viking navigation and settlement. Reykjavík, Iceland: University of Iceland Press.
Hagen, R. (2019). Vikings at Sea: Inventions and Innovations in Shipbuilding and Navigation. Jefferson, NC: McFarland & Company.
Hall, R. A. (2017). The Viking Dig: How an Archaeological Expedition Brought the Past to Life. London, UK: Puffin Books.
Thingvellir, Brattahlid, & Meadows, L. A. (2016). Los nórdicos en el Atlántico Norte, 835-1000. In Los hombres del norte (pp. 291-338). New York, NY: Ariel
Hecht, E. (2015). Optics (5th ed.). London, UK: Pearson.
Holm, P. (2017). Viking World: Ancient Norse Civilizations. Abingdon, UK: Viking World Press.
Jones, G. R. (1986). Navigation in the Viking Age. Oxford, UK: Archaeopress.
Knuth, E. (1997). The Natural Navigator: The Rediscovered Art of Letting Nature be Your Guide. Woodstock, VT: The Countryman Press.
Lindqvist, T. (2014). Terra Incognita: Travels in Antarctica. Edinburgh, UK: Birlinn.
Lippiatt, G. (2019). Polarized Light in Nature. Berlin, German: Springer.
Liritzis, I., Panagiota Preka-Papadema, Panagiotis Antonopoulos, Konstantinos Kalachanis y Chris G.Tzanis (2017). Does astronomical and geographical information of Plutarch's De Facie describe a trip beyond the north Atlantic ocean?. Journal of Coastal Research, 34(3), 651-674. https://doi.org/10.2112/JCOASTRES-D17-00105.1
Ma, H. (1433). Yingya Shenglan (The Overall Survey of the Ocean's Shores). In Ma Huan (Author) & J. V. G. Mills (Translator) (1970), Ying-yai Sheng-lan: The Overall Survey of the Ocean’s Shores [1433]. Cambridge: Cambridge University Press.
McGrail, S. (2001). Ancient Boats in North-West Europe: The Archaeology of Water Transport to AD 1500. Abingdon, UK: Routledge.
McGrail, S. (2014). Boats of the World: From the Stone Age to Medieval Times. Oxford, UK: Oxford University Press.
Price, N. S. (2014). The Viking Way: Religion and War in Late Iron Age Scandinavia. Oxford, UK: Oxbow Books.
Raffield, B. (2017). The Viking World. Abingdon, UK: Routledge.
Seaver, K. A. (1996). The Frozen Echo: Greenland and the Exploration of North America, ca. A.D. 1000-1500. City of Redwood City, CA: Stanford University Press.
Sutherland, P. (1992). The Vikings. London, UK: Penguin Books.
Thomsen, E. (2016). Vikings and Birrefringent Crystals. Scientific Reports, 6, 38332.
Zhou, Q. (1178). Lingwai Daida (Accounts Beyond the Rivers). Retrieved from http://www.chinaknowledge.de/Literature/Science/lingwaidaida.html
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