TIL In 1877 Jules Janssen used a special 5.5 inch solar telescope to take the first photos of the Sun showing granulation on its surface. Of the 6000 images made for his 1904 Solar Atlas, only sev...

www.antiquariat-kuehn.de

TIL In 1877 Jules Janssen used a special 5.5 inch solar telescope to take the first photos of the Sun showing granulation on its surface. Of the 6000 images made for his 1904 Solar Atlas, only sev...

www.antiquariat-kuehn.de

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Today I Learned (TIL)English • 1 year ago

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The original was posted on /r/todayilearned by /u/einstein_bern on 2023-07-04 18:47:15+00:00.

Original Title: TIL In 1877 Jules Janssen used a special 5.5 inch solar telescope to take the first photos of the Sun showing granulation on its surface. Of the 6000 images made for his 1904 Solar Atlas, only seven survived

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