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.
Brak says you'd better have a listen to these sounds! Brak is one of the hosts of Cartoon Planet, along with Space Ghost and Zorak, and one of the funniest guys currently on TV. The cat-like Brak was one of space's most terrible pirates, until he had the misfortune to run foul of Space Ghost. He's voiced by Keye Luke.