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Title: The Round Earth and Christopher Columbus
Url: http://www.phy6.org/stargaze/Scolumb.htm
Creator: Stern, David P. (David Peter), 1931-
Publisher: David P. Stern
Description: This web page, created by David P. Stern, describes observations that show the earth is a sphere and the history of these observations. The round shape of the Earth may be inferred from the existence of a horizon at sea. Ancient Greeks deduced it from the shape of the Earth's shadow when the Moon is eclipsed and from stars visible only in southern countries. Eratosthenes accurately estimated the size of the Earth, but Columbus based his plans on an incorrect value, by which India would be much closer to Spain. This is part of a large web site, "From Stargazers to Starships" the presents physics concepts using space science and an historical perspective. Spanish, French, and Italian translations are available, as well as links to lesson plans for teachers.
LC Classification: History (America) -- America -- Discovery of America and early explorations -- Columbus (Cristoforo Colombo)
Science -- Astronomy -- Descriptive astronomy -- Solar system -- Planets. Planetology -- Earth as a planet. Astronomical geography
Science -- Astronomy -- History
Science -- Astronomy -- History -- Ancient -- Greek
Science -- Astronomy -- History -- Medieval
GEM Subject: Science -- Astronomy
Social studies -- Geography
Key Concept: Astronomy -- Earth
Date Issued: 2004-12-12
Resource Type: Reference Material
Instructional Material
Instructional Material -- Instructor Guide/Manual
Format: Document -- HTML
Audience: Educator
Learner
Education Level: High School
Higher Education
Higher Education -- Undergraduate (Lower Division)
Higher Education -- Undergraduate (Upper Division)
Higher Education -- Technical Education (Upper Division)
Higher Education -- Technical Education (Lower Division)
Vocational/Professional Development Education
Language: English
French
Italian
Spanish
Rights: Dr. David P. Stern
Access Rights: Free access
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Source: comPADRE
Full Record Views: 51
Resource URL Clicks: 25
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