“Japanese clock melted by WWII nuclear bomb. On display in the War Memorial museum, Canberra, Australia. The hands apparently show the time of the explosion. The infocard described the glass face as being melted by the blast (you can see it dripping at the bottom), and said the clock was found near the centre of the explosion.”

— By James from Sydney, Australia (Japanese clock melted by WWII nuclear bomb) [CC BY-SA 2.0 (http://creativecommons.org/licenses/by-sa/2.0)%5D, via Wikimedia Commons