whatever on 27 September 2008
Imaginary numbers were created so you can take the square root of negative numbers and still have it make sense. Taking the square root of negative numbers is critical in engineering to solve many problems.
Do you have the same problem with negative numbers? They don't describe anything real. How can you have less than nothing? If I have 4 sheep, how can I take away 5?? Yet no one questions that negative numbers are useful nor has a hard time understanding them.
