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some of the reason why energy and power definitions are confusing
Original poster: "Alfred Erpel" <alfred-at-erpel-dot-com>
Howdy all,
A coulomb is (to me) an unsimplifiable property of the universe. It is
6.41418*10^18 electrons. You can't state this in a simpler form another way
in terms of ¹distance, mass, time and energy. It bugs the hell out of me
that the coulomb in the SI system is defined as a DERIVED unit in terms of
amperes. And amperes has the status of being a basic unit. Amperes is
defined as coulombs/second. Amperes were INVENTED by man yet have been
confered the status of a basic unit. This I believe obfuscates and confuses
many issues. I have no idea why this was done. It is my opinion that
energy has nothing to do with time, however with this artificial definition,
joules (energy) = watts * seconds. With this system the energy unit has
time in it and the power unit doesn't.
remember, amps = coulombs / seconds below and:
joules = watts * seconds
joules = volts * amps * seconds
joules = volts * (coulombs / seconds) * seconds
joules = volts * coulombs
Hence, joules should (IMHO) always be spoken of as being equal to volt *
coulombs. This is a more basic unit and without reference to time. Power
would be volt * coulombs / second. This is way less confusing.
If anyone has a clue why the SI system made this exception to defining basic
units, I sure would like to hear it.
¹ distance, mass, time, and energy is it baby, that and nothing else,
comprises all that we know.
Regards,
Al Erpel