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.
Talley's vocal work includes portraying Karen, the computer wife of Plankton on SpongeBob SquarePants, as well as Gretchen, the tomboyish alligator Squirrel Scout, the scholarly giraffe named Nina, and the largely angry warthog named Ms. Mucus on Camp Lazlo.