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.
Nickelodeon began celebrating the 10th anniversary of the series on January 18, 2009 with a live cast reading of the episode SpongeBob vs. The Big One. The reading â a first for the series â was held at that year's Sundance Film Festival.