Effect shown is apparently known as "Pharaoh's Serpent" : https://en.wikipedia.org/wiki/Mercury%28II%29_thiocyanate#Pharaoh.27s_Serpent https://en.wikipedia.or

Effect shown is apparently known as "Pharaoh's Serpent" : https://en.wikipedia.org/wiki/Mercury%28II%29_thiocyanate#Pharaoh.27s_Serpent https://en.wikipedia.org/wiki/Mercury%28II%29_thiocyanate#Ph...