Unit Imaginary Number. The unit Imaginary Number (the equivalent of 1 for Real Numbers) is â(â1) (the square root of minus one). In mathematics we use i (for imaginary) but in electronics they use j (because i already means current, and the next letter after i is j). Examples of Imaginary Numbers i
8 Things You Must Do When Your Flight Is Cancelled Or Delayed. 1  Fly in the morning. You can almost stop reading here, this one is so key. 2  Avoid regional jets flying out of hub airports. Hub airports depriorize small regional planes because bumping them affects fewer passengers and costs airlines less money than rerouting an AirBus.
In fact, money is exactly what's being blamed for killing the longest flight in the world. That's right -- after nine years of service, Singapore Airlines Flights 21 and 22 are scheduled for cancellation.