In mathematical induction, showing that something works for the first case, or that P1 is true. angle of depression. The angle formed by a horizontal line and an observer's line of sight to an object below. angle of elevation. The angle formed by a horizontal line and an observer's line of sight to an object above.
Plankton's voice is provided by American actor Mr. Lawrence. The voice Lawrence uses for Plankton originated as an imitation of one of his deep-voiced friends from high school. On television, he first used the voice for incidental characters on Rocko's Modern Life.
Karen's design for the second movie. Karen was first introduced as Plankton's computer system who would be a part of all of his inventions. She was named after Karen Hillenburg, the wife of series creator Stephen Hillenburg. Her voice is provided by Jill Talley, who is the wife of SpongeBob's voice actor Tom Kenny.