Kaprekar's Constant
The rock band Kaprekar's Constant standing by the Thames near Woolwich, close to the spot where the Princess Alice Paddle Steamer sank in 1878 with the loss of nearly 700 lives. This photo was used on the cover of the band's excellent 2019 album Depth of Field which features a historical song (and poem) referring to the accident. Catch up with them at http://www.facebook.com/kaprekars.constant
