Abstract:We revisit the known experiment of using the solar projection along a tube in order to calculate the Sun’s radius. However, we propose several features that greatly improve the precision in the measurements. We discuss how the shape of the performation hole affect the results, and what is the best way to construct it. We also discuss how the examination of the measurements can be performed through photographs taken with smartphones, and their analysis using different free softwares. We also propose how a gener… Show more
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