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. 2  Avoid regional jets flying out of hub airports. 3  Before booking, check a routeâs on-time performance.  Donât check bags.
Basically, the cheaper the airline, the more delays and cancellations youâll experience. Hereâs a list of airlines with the most delays: 1  Delta Airlines (28.5% of flights cancelled or delayed) 2  Alaska Airlines (32.7% of flights cancelled or delayed)  United Air lines (35.3% of flights cancelled or delayed)