Helium: Found in the Sun Before Earth
In short: Helium was first identified in the Sun during a total solar eclipse in 1868 using spectroscopy before being isolated on Earth in 1895.
A 1:24 short film in the series “How It Worked”.
Sources used in this film: Journal of Astronomical History and Heritage, “Observations of the Total Solar Eclipse of 18 August 1868 Carried Out by Jules Janssen at Guntoor, India”; Springer, “Janssen and the Solar Flames: The Key Eclipse of 1868”; High Altitude Observatory, “Solar Physics Historical Timeline (1800-1999) | High Altitude Observatory”; Nature, “Terrestrial Helium (?) - Nature”; Britannica, “Sir William Ramsay | Nobel Prize-Winning British Chemist | Britannica”; Academia.edu, “Global helium abundance measurements in the solar corona”.
Sources used in this film
- Journal of Astronomical History and Heritage — Observations of the Total Solar Eclipse of 18 August 1868 Carried Out by Jules Janssen at Guntoor, India · View →
- Springer — Janssen and the Solar Flames: The Key Eclipse of 1868 · View →
- High Altitude Observatory — Solar Physics Historical Timeline (1800-1999) | High Altitude Observatory · View →
- Nature — Terrestrial Helium (?) - Nature · View →
- Britannica — Sir William Ramsay | Nobel Prize-Winning British Chemist | Britannica · View →
- Academia.edu — Global helium abundance measurements in the solar corona · View →
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Sources
- Summary by Intellect · source: Journal of Astronomical History and Heritage: Observations of the Total Solar Eclipse of 18 August 1868 Carried Out by Jules Janssen at Guntoor, India
- Also: Springer: Janssen and the Solar Flames: The Key Eclipse of 1868
- Also: High Altitude Observatory: Solar Physics Historical Timeline (1800-1999) | High Altitude Observatory
- Also: Nature: Terrestrial Helium (?) - Nature
- Also: Britannica: Sir William Ramsay | Nobel Prize-Winning British Chemist | Britannica
- Also: Academia.edu: Global helium abundance measurements in the solar corona
To cite this card, link to https://intellectplus.co.uk/app/helium-found-in-the-sun-before-earth.
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