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.
The first Muppet characters appeared as early as 1955, in Sam and Friends, a Washington, D.C.-based show that was on the air for six years. Kermit the Frog was one of the show's regulars, and thus was one of Henson's first Muppet creations.