Originally Posted By: Jim Fogle
Engineers and technicians are trained different theories regarding the flow of electricity. One theory addresses electron movement while the other theory looks at electron hole movement. When an electron moves left to right then the electron hole moves right to left.

It's just as confusing as trying to determine who won the calculator war, Hewlett Packard (HP) with their Reverse Polish Notation (RPN) or Texas Instruments (TI) with their Standard Algebraic Notation (SAN). Engineers typically were trained to use RPN while technicians SAN. We may strive to be a classless society but mankind always finds a way to classify people.


I have both calculators. I use the HP for mortgage and interest calculations and the TI for engineering calculations. Actually nowadays there are so many calculators on the internet I use them as much as anything. We also have programs designed for highly specific calculations such as structural engineering.

There are all sorts of terms of measurement that are slowly going away. Feet, yards, fathoms, leagues are rapidly being replaced by meters.

An even with the best of systems many measurements are difficult at best to conceptualize. How small is a nanometer? How far is a parsec? You can not see a nanometer because it is smaller that a wave length of light.

One parsec is defined as the distance at which an arc of length one astronomical unit subtends an angle of one second of an arc .

1 parsec = 3.08 x 1016m. Say what??? OK if you say so...lol

Billy

“Amazing! I’ll be working with Jaco Pastorius, Charlie Parker, Art Tatum, and Buddy Rich, and you’re telling me it’s not that great of a gig?
“Well…” Saint Peter, hesitated, “God’s got this girlfriend who thinks she can sing…”