Because of uncertainty about the physical significance of the hydrogen ion concentration, the definition of the pH is an operational oneâi.e., it is based on a method of measurement.
Topics: Entertainment âº Television âº Nickelodeon. Spongebob Squarepants first aired in the US on July 17, 1999. It aired in the UK on January 4, 2000 and in Japan on July 19, 2002. Login or Sign Up to answer this question.
1 The first full-length episode of Oobi aired on April 7, 2003. Moose and Zee, Noggin's former hosts, were introduced on this same day.  Josh Selig, the creator of Oobi, was inspired to create the show after watching puppeteers in Poland perform with their bare hands.