Timing the sunset to calculate where space begins
I put a 1,000 year old theory to the test. Thanks to Nebula for supporting this video: https://go.nebula.tv/simonclark
Buy my book on the history of atmospheric science, Firmament: https://geni.us/firmament
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My video on where the atmosphere stops: • Where does the atmosphere stop?
According to a scholar living 1,000 years ago in Andalusia, by taking two simple measurements of Twilight and applying some trigonometry you can estimate the height of the atmosphere. In this video I test out the theory, and come up with a height for where space begins.
REFERENCES
This video was inspired by this paper: B. Goldstein, ‘Ibn Muʿādh’s Treatise on Twilight and the Height of the Atmosphere’, Archive for History of Exact Sciences, vol. 17, no. 2 (1977), pp. 97–118.
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Music by Epidemic Sound: http://nebula.tv/epidemic
Some stock footage courtesy of Getty.
Edited by Luke Negus.
Where does space begin? How did ancient people know about space? What is Twilight? How can you use twilight to estimate the height of the atmosphere? Is all atmospheric science western? In this science experiment video I answer these questions and more.
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Watch video Timing the sunset to calculate where space begins online, duration hours minute second in high quality that is uploaded to the channel Simon Clark 24 January 2024. Share the link to the video on social media so that your subscribers and friends will also watch this video. This video clip has been viewed 22,131 times and liked it 2.5 thousand visitors.
