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Daily, seasonal, and equinoctial solar paths on a school soccer field
Preview AbstractThe shadow of a wall cast by the Sun on a soccer field has been used to measure the change of the altitude and azimuth of the Sun along the day and through the seasons. The change of curvature parameter of the daily hyperbola shadow’s path, has been recovered in the days around the spring equinox 2021. The study of the daily paths has been possible with chalk and meter during school days, on this field, and the data have been reported on a spreadsheet. The students were impressed by this whole-year experiment, while normally at school the experimental sessions are one-hour long.