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 SquarePants aired this as the first episode along with Reef Blower/Tea at the Treedome on May 1, 1999, following the Nickelodeon Kids' Choice Awards. The series later made its official debut on July 17, 1999 with the second episode Bubblestand / Ripped Pants..