Bob the Science Guy: Al Biruni | A Tale of Two Horizons

Teacher or professor: Bob the Science Guy
Subject: Science
Content of the Lesson: Bob the Science Guy has a look at the issue of the geometric vs the apparent horizon. When Al-Biruni developed his method of determining the radius of the earth, he did not take into account atmospheric refraction. Can we accurately determine the radius of the earth from a refracted horizon? Bob looks at the claims and the actual numbers. Trying out a new end screen, let me know what you think... FAIR USE STATEMENT This video may contain copyrighted material the use of which has not been specifically authorized by the copyright owner. This material is being made available within this transformative or derivative work for the purpose of education, commentary and criticism, and is believed to be "fair use" in accordance with Title 17 U.S.C. Section 107. Please take a moment to like and subscribe to this channel Links for this video if you want more information- The Maine Surveyor: https://www.youtube.com/watch?v=dfD-rX6dmMQ Discussions of the Horizon: https://en.wikipedia.org/wiki/Horizon The Accuracy of the Astrolabe: https://www.tandfonline.com/doi/full/10.1080/00253359.2013.766999 The Advanced Earth Curve Calculator: http://walter.bislins.ch/bloge/index.asp?page=Advanced+Earth+Curvature+Calculator Bob's Websites Check them OUT: https://www.patreon.com/bobthescienceguy https://sites.google.com/view/bobthescienceguy https://www.facebook.com/BobtheScienceGuyMichigan https://twitter.com/bobthe_guy Check out my RECOMMENDED VIDEOS Jose JG Gonzalez: https://www.youtube.com/channel/UCMv0iw6N8xRFvggBignzK8g Shawn Hawkins: https://www.youtube.com/user/kd0afk/videos Prof Dave Explains: https://www.youtube.com/channel/UC0cd_-e49hZpWLH3UIwoWRA/playlists Sean G Truth Army: https://www.youtube.com/channel/UCuRhIs_mNeU_UlXZ9eUHguQ Red's Rhetoric: https://www.youtube.com/channel/UCrHsrhLqowsAIYbaNE7GcBg/videos GreaterSapien: https://www.youtube.com/user/GreaterSapien/videos DeadKennedyinSpace: https://www.youtube.com/channel/UC4ri3-k8e2rme3PZcEaBgwQ/videos The Shills: https://www.youtube.com/channel/UC6dLr5oeX7plZa5FKwHeL9w/videos Prof Phil Bell: https://www.youtube.com/channel/UCbCCDBYkiYV3F41D26iu_sA/videos Common Sense Criticism: https://www.youtube.com/channel/UCpR2t--ByrrxMhkJw7wRNbg/videos PlanarWalk: https://www.youtube.com/user/planarwalk2/videos Roohif: https://www.youtube.com/user/roohif/videos WheresWa11y: https://www.youtube.com/user/wheresa11y/videos I'll be updating this list every month or so and am constantly running across new creators. So check back frequently! Bob the Science Guy


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