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  1. Byzantine solar eclipse records illuminate obscure history of Earth

    These new data shed light on variation of the Earth's rotation on a centennial timescale, and thus help refine the study of other global phenomena throughout history, such as sea-level and...

  2. Byzantine Records of Solar Eclipses Have Refined Measurements of Earth

    Records of solar eclipses from a millennium and a half ago have allowed scientists to refine measurements of Earth's changing rotation. A painstaking review of historical documents from …

  3. Study fills significant gap in Earth’s rotation history with ancient ...

    Oct 15, 2023 · Taking the example of the July 19, 418 CE eclipse, a Byzantine text reported that stars appeared in the sky during daytime, observed from Constantinople. Earlier models of ΔT …

  4. Byzantine solar eclipse records illuminate obscure history of Earth ...

    Sep 15, 2022 · To improve understanding of variation of Earth's rotation in the 4th--7th centuries CE, a research team analyzed Byzantine records from this period to identify total solar eclipses …

  5. The Variable Earth’s Rotation in the 4th–7th Centuries: New ΔT ...

    Before 1623, this parameter has been constrained on the basis of analyses of historical eclipse records for their date and probable locations of total/annular solar eclipse records.

  6. Astronomers use Byzantine chronicles to learn about the Earth’s rotation

    Japanese researchers investigated Byzantine texts from the 4th to 7th centuries to identify five total solar eclipses near the Eastern Mediterranean and improve the model of the Earth's …

  7. Eclipses and the Earth’s Rotation - Cambridge University Press ...

    Historical records of eclipses of the Sun and Moon between 720 BC–AD 1600 provide vital information on the rotation of the Earth. From several hundred records we derive an estimate of …

  8. How ancient solar eclipse records shed light on Earth's rotation

    Feb 22, 2023 · Five eyewitness records of ancient solar eclipses in the fourth, fifth, and seventh centuries A.D. are helping scientists refine their knowledge of the changing speed of Earth’s …

  9. NASA - Uncertainty in Delta T

    Unfortunately, estimating the standard error in ΔT prior to 1600 CE is a difficult problem. It depends on a number of factors which include the accuracy of determining ΔT from historical …

  10. The Variable Earth's Rotation in the 4th-7th Centuries: New ΔT ...

    Here, we analyze Byzantine historical sources with reports of total solar eclipses along the Eastern Mediterranean coasts and add probable ΔT constraints on their basis.