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 November 12, 2007, SpongeBob's first TV movie Atlantis SquarePantis premiered, after a SpongeBob marathon. A behind the scenes feature aired after the movie. Also on November 23, 2007, there was another SpongeBob marathon including a rerun of Atlantis SquarePantis and eight new episodes.