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.
In the episode Christmas Who? that first aired December 6, 2000, SpongeBob showed a copy of his birth certificate that showed his birth date as July 14, 1986. Since the first SpongeBob episode aired on May 1, 1999, we can conclude that the birth certificate did not refer to his creation as a cartoon. Therefore, in the Christmas Who? episode, SpongeBob would have been 14 1/2 years old.