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.
The night before you are scheduled to fly, check to make sure that everything is proceeding as planned. After purchasing your ticket, you should have received a confirmation e-mail from your airline. Check that confirmation to make sure the flight is still scheduled to take off on time. If your flight time has changed, make sure to adjust your travel plans accordingly. Depending on how long your flight has been delayed, it may affect any connecting flights you are intending to take.