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ERIC Number: EJ1025215
Record Type: Journal
Publication Date: 2013-Dec
Pages: 2
Abstractor: As Provided
Reference Count: 1
ISSN: ISSN-0031-921X
The Size of Earth from Seven Miles Up
Mottmann, J.
Physics Teacher, v51 n9 p555-556 Dec 2013
While on a vacation flight from Hawaii to California, I observed sunset occurring on clouds far below. The view triggered a vague memory about a fun article 1 published more than three decades earlier on the topic of "Doubling Your Sunsets." Simple observations from my flight made it possible to compute the Earth's radius.
American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A