Eratosthenes Experiment Report: Lord Botetourt High School

From: hbutler_at_bcps.k12.va.us
Date: Sat Sep 23 2006 - 10:25:04 PDT

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Experiment Report for the Eratosthenes Project on http://youth.net/

School Name:     Lord Botetourt High School
School Location: 1435 Roanoke Road
Daleville, Virginia 24083

Email Address:   hbutler_at_bcps.k12.va.us
Experimenter:    Mrs. Butler's Honors Earth Science Class

Latitude         37 24 18 N
Longitude:       79 54 51 W
Distance to Equator: 2580.6 miles

Measured shadow angle in degrees: 40
Calculated Earth circumference:   23,225.4 miles 

Comments:
We were pleased to have calculated a circumference this close to the actual number (about 24,855 miles).  We had a very heavy cloud cover on September 22 and were fortunate to have a small break in the clouds just long enough to measure the angle of the shadow.  

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