Electrolysis of water a small-scale electrolytic cell. It consists of three joined upright cylinders. The inner cylinder is open at the top to allow the addition of water and the electrolyte. A platinum electrode is placed at the bottom of each of the two side cylinders, connected to the positive and negative terminals of a source of electricity. When current is run through the Hofmann voltameter, gaseous oxygen forms at the anode (positive) and gaseous hydrogen at the cathode (negative). Each gas displaces water and collects at the top of the two outer tubes, where it can be drawn off with a stopcock.
John (given name) masculine name in the United Kingdom, but by 2004 it had fallen out of the top 50 names for newborn boys in England and Wales. By contrast Jack, which was a nickname for John but is now established as a name in its own right, was the most popular name given to newborn boys in England and Wales every year from 1995 to 2005. However, "John" has not been a popular one for members of the royal family. The memory of King John is tainted by negative depictions of his turbulent reign and troublesome personality and by his role as