This may help. An imaginary number is one that does not fit on the number line. -i stands for - square root of one. Any negative square root just doesn't work. Nothing squared will give you a negative. But some great mathematician said he wanted a negative square root, so he created -i. (Somewhere in one of our books we were told who this cornball was-but I don't remember his name.) Back to -i. Since it can't fit on the number line, you have to imagine it. Our finite minds just want to place it somewhere-and the only place is in our imagination. Hopefully this makes sense - if not - just imagine it does.lol :o)