حدث
The element later named as helium is first detected in the spectrum of the Sun's chromosphere, by French astronomer Jules Janssen
18 أغسطس 1868 · 10.60° N, 102.20° E
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- متى
- 18 أغسطس 1868
- النوع
- حدث
- إحداثيات
- 10.60° N, 102.20° E
الموضع: coordinates of the event it links, Solar eclipse of August 18, 1868.
الملخص
The element later named as helium is first detected in the spectrum of the Sun's chromosphere, by French astronomer Jules Janssen, during a total eclipse in Guntur, British India, but is assumed to be sodium.
Solar eclipse of August 18, 1868
Total eclipse named after Rama IV of Siam
A total solar eclipse occurred at the Moon's ascending node of orbit on Tuesday, August 18, 1868, with a magnitude of 1.0756. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of the Sun for a viewer on Earth.
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- Wikipedia year pages (German), by Wikipedia contributorsWikipedia contributors · يسمّيه «Der französische Astronom Jules Janssen entdeckt in Indien während einer Sonnenfinsternis eine einem bisher unbekannten Element zuzuordnende Emissionslinie in…»Creative Commons Attribution-ShareAlike 4.0صفحة المصدر