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.
From Wikipedia, the free encyclopedia. SpongeBob SquarePants is a fictional character, the protagonist of the American animated television series of the same name. He is voiced by actor and comedian Tom Kenny, and first appeared on television in the series' pilot episode on May 1, 1999.