The square root of -1 is a special number we call "i," and it is a member of a set of numbers called the imaginary numbers. The imaginary numbers are the set of all numbers that are the square root of negative numbers.

Why does science use 'imaginary' numbers?

Because ( I'm gonna whisper this for ya so they won't explode )... they have no effing clue just like religious folk

not even Gamma Correction can fix our not knowing what the hell is going on!!!!

This sh*t is scary and beyond the Poser forum to ever come to terms with let alone figure out how to make perfect lighting in every scene.