Trevor Blake: Day of Disappearance

22 July 2009 » math, trevorblake

Pi Approximation Day (22/7 is approximately equal to pi) is a Day of Disappearance…

July 22 1376 – The Pied Piper of Hamelin leads the town’s rats and children to disappear.
July 22 1587 – Roanoke Colony disappears.
July 22 1942 – The Jews of the Warsaw Ghetto begin to disappear.
July 22 1962 – The Mariner 1 spacecraft is destroyed after erratic flight patterns.
July 22 1983 – Martial law in Poland is revoked.
July 22 1992 – Pablo Escobar escapes from prison.
July 22 1993 – Levees near Kaskaskia, Illinois rupture, forcing the entire town to evacuate.

Updated July 22 2011, of course causing some of the previous content to disappear.