IUPAC Green Book[3] in that, in terms of its definition [4], pH = âlg a. H. it involves a single ion quantity, the activity of the hydrogen ion, which is immeasurable by any ther-. modynamically valid method and requires a convention for its evaluation.
He began developing SpongeBob SquarePants into a television series in 1996 upon the cancellation of Rocko's Modern Life, and turned to Tom Kenny, who had worked with him on that series, to voice the title character.
On April 12, 2012, SpongeBob aired its 174th episode and has produced 204 episodes, and more episodes will be produced, marking it as the first Nicktoon to have 200 or more episodes. On July 21, 2012, SpongeBob was renewed and aired its ninth season.