In November 1781, John Hanson became the first President of the United States in Congress Assembled, under the Articles of Confederation. Many people have argued that John Hanson, and not George Washington, was the first President of the United States, but this is not quite true.
Even and odd mode impedances of a coupled microstrip line. actually I find the reason when you use differential port, the impedance you get is twice the odd mode impedance, whereas if you use common port, the impedance is half the even mode impedance. 1 members found this post helpful.
Odd number means the freeway runs north-south, while even numbered freeways travel east and west. For example, interstate 5 (I-5) goes all the way from the Southern border in San Diego to the Northern border in Blaine, WA. I-10, on the other hand, connects the West Coast of San Diego and the East Coast of Jacksonville, FL. Odd freeway numbers start from the West Coast, and increase toward east.