waterfall – Retrohelix.com https://retrohelix.com Personal blog about whatever I find amusing. Tue, 08 Oct 2013 07:51:51 +0000 en-US hourly 1 https://wordpress.org/?v=6.7.1 Escher’s (Impossible) Waterfall Machine https://retrohelix.com/2012/10/eschers-impossible-waterfall-machine/ https://retrohelix.com/2012/10/eschers-impossible-waterfall-machine/#respond Sun, 28 Oct 2012 22:42:56 +0000 https://retrohelix.com/en/?p=16367 https://retrohelix.com/2012/10/eschers-impossible-waterfall-machine/feed/ 0