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.
SpongeBob's 10th anniversary and Future (2009-present) A primetime SpongeBob SquarePants 10th Anniversary documentary special has been announced for summer 2009, discussing the history of the cartoon, and its impact on popular culture. Also, a beta version of a new SpongeBob website debuted 9 January 2009.