Four Times a Year, This Sundial Spells the Word “Solstice” or “Equinoxe”

This amazing sundial at the Ecole Supérieure des Mines de Paris in Valbonne, France is designed so that on the day of the summer and winter solstices, sunlight shining through it displays the word “solstice.” On the days of the spring and autumn equinoxes, the sunlight forms the word “equinoxe.”

More