From: V Laxmanan (vlaxmanan@hotmail.com)
Date: Tue Jan 06 2004 - 01:11:01 PST
Eratosthenes Experiment: Analysis of September 2003 data The purpose here is to present a simple and straightforward analysis of the shadow angle measurements reported by students from 16 schools from different parts of the world. As we see from Figures 1 and 2 in the attached Microsoft PowerPoint file, the reported shadow lengths (x) deviate significantly from the theoretical shadow lengths. The errors in the shadow length measurements are summarized in Table 1 of the attached Microsoft Word document. Once again, as with the measurements reported during earlier equinoxes, we observe both positive and negative deviations from the theoretical shadow lengths. Again, the deviations are too large to be attributed entirely to carelessness on the part of the students (some of them were elementary school students) or genuine difficulties in the measurements of the shadow lengths. Further discussion of the significance of such measured deviations may be found in the documents posted in March 2003 and September 2003. I can be reached at vlaxmanan@hotmail.com _________________________________________________________________ Make your home warm and cozy this winter with tips from MSN House & Home. http://special.msn.com/home/warmhome.armx