𝔖 Bobbio Scriptorium
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Effect of fine particles on some characteristics of granular base courses

✍ Scribed by B. Babić; A. Prager; T. Rukavina


Book ID
105590137
Publisher
Springer
Year
2000
Tongue
English
Weight
565 KB
Volume
33
Category
Article
ISSN
1871-6873

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On some characteristics of umbral fine s
✍ F. Kneer 📂 Article 📅 1973 🏛 Springer 🌐 English ⚖ 572 KB

Photographic spectra of the umbra of a sunspot (1971, August 24, Rome No. 6205) around 6150 A~ show fine bright threads which were identified as the spectra ofa lightbridge, of the bright end of a penumbral filament and of umbral dots, respectively. It was found, in agreement with the results of oth