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  6. Lanyon Quoit burial chamber, Cornwall
arrow_back_ios arrow_forward_ios Lanyon Quoit burial chamber, Cornwall

March 14, 2022

Lanyon Quoit burial chamber, Cornwall

© Guy Edwardes/Minden Picture

It’s just pi in the sky.... Pi Day

Did prehistoric humans build this structure to celebrate Pi Day? Seems unlikely. Pi Day is a relatively recent phenomenon, invented by an American physicist in 1988. The number π (pi) itself, however, has been around since antiquity, when it was first calculated as the ratio of a circle’s circumference to its diameter.

In the USA, 14 March expressed numerically (in month/date format) is 3/14 – matching the mathematical constant’s first digits (it doesn’t work quite as well with the UK date format). But some go to great lengths to be able to recite pi’s digits way beyond 3.141592…, which earns them plaudits in some, um, circles. The world record is a staggering 70,000 digits after the decimal point - achieved by 21-year-old student Rajveer Meena in 2015.

You might prefer to celebrate by simply eating a slice or two of pie, but while you’re there, take some time to appreciate the unintentional π symbol formed by this Neolithic burial chamber in Cornwall. As the morning sun warms Lanyon Quoit’s ancient stones, consider who built it and how, as it predates metal tools and is older than Egypt’s pyramids. Theories abound, of course, but could π have been involved?

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