Chloride, New Mexico/ In 1879, Harry Pye, an Englishman, was hauling freight for the army to the post at Ojo Caliente when he searched for shelter near dusk where roaming Apache parties would not spot him. In the morning he discovered silver chloride ore nearby, and later, with some friends, returned to stake claims.
Paper Art, Katsumi Hayakawa, Reflection 3 (detail), 2011, Paper, glue, pencil, vinyl chloride on arches paper, 33.5 x 79.5 cm, "Channeling the millions of private worlds that collectively compose cities, Hayakawa creates incredibly complex cut paper sculptures that are at once fragile and overwhelming."
The pH scale is traceable to a set of standard solutions whose pH is established by international agreement. Primary pH standard values are determined using a concentration cell with transference, by measuring the potential difference between a hydrogen electrode and a standard electrode such as the silver chloride electrode. #Glogster #pH