June 26, 2012
In the grand ledger of cosmic time, a human life is breathtakingly brief. But brevity is not insignificance.
A Sundial that Shows Solstice
Birthday · June 26, 2012
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APOD published June 26, 2012. Credit: Jean-Marc Mari. A publication-date match, not a photo taken on your date. Independent of NASA.
What time is it? If the time and day are right, this sundial will tell you: SOLSTICE. Only then will the Sun be located just right for sunlight to stream through openings and spell out the term for the longest and shortest days of the year. And that happened last week and twice each year. The sundial was constructed by Jean Salins in 1980 and is situated at the Ecole Sup�rieure des Mines de Paris in Valbonne Sophia Antipolis of south-eastern France. On two other days of the year, watchers of this sundial might get to see it produce another word: EQUINOXE. Resource Guide: NASA Education and Public Outreach
Image credit: Jean-Marc Mari