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.
SpongeBob aired its first episode, Help Wanted / Reef Blower /Tea at the Treedome, after the 1999 Nickelodeon Kids' Choice Awards. At this time, Rugrats was the most popular show on Nickelodeon and had already outlived dozens of other lower-budget cartoons.