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Al-Khwārizmī and annular solar eclipse

✍ Scribed by Hamid-Reza Giahi Yazdi

Book ID
106087080
Publisher
Springer-Verlag
Year
2011
Tongue
English
Weight
407 KB
Volume
65
Category
Article
ISSN
0003-9519

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Zenith photoelectric measurements during
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Measurement of the light intensity in Ihc zenith, obtained during the anqular solar eclipse of April 29, 1976 are given in three wavelength bands {.centcrcd on A's 4800. 5400 and 6100 A). The observed diflercnces in the three wavelength regions have been examined and compared wilh calculations takin

On the variation of the direct solar rad
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✍ J. Deliyannis; D. Papathanasoglou; M. Stathopoulou-Tsoga 📂 Article 📅 1979 🏛 Springer 🌐 English ⚖ 205 KB

Measurements of the direct solar radiation during the annular solar eclipse of April 29, 1976 are given in three wavelength bands (centered on 800, 680, and 450 nm). A decrease of the solar radiation after the last contact was observed, especially in the red and infrared. This is considered in conne