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.
The series officially premiered on July 17, 1999. It has received worldwide critical acclaim since its premiere and gained enormous popularity by its second season. A feature film, The SpongeBob SquarePants Movie, was released in theaters on November 19, 2004, and a sequel was released on February 6, 2015.
Voice actor Tom Kenny, shown here in 2008, provides the voice of SpongeBob SquarePants, the show's main character. SpongeBob SquarePants is an American animated television series created by marine biologist and animator Stephen Hillenburg that debuted on Nickelodeon in the United States on May 1, 1999. The show employs six main voice actors, and numerous regular cast and recurring guest stars.