but also: electric potential, voltage, charge
In fact, it doesn't matter if it's clear what is meant.
One can easily talk about "(electric) potential" , "current" and "power" in a physics course, where the RELATIONS and the EFFECTS are the main important thing.
Instead, for the electrician and the engineer, installing or inventing "real world machines", the "voltage" will warn him to look out, the "amperage" will make them install a bigger breaker, and the "wattage" ... may as well be given in "X Rpm at torque of ..." so the braks installed match the engine to be stopped,.
But for theoretical stuff the "dimensions" are more important than the "measures" : the "dimension" doesn't NEED a number, not even "big or small". The measure, without the number is allright meaningless.
(I LOVED this in physics class, but when teaching -years ago- I found out that pupils are frightened by both: the dimensions make up formulas, the measures are wrongly filled in so they get mixed up anyhow)
And the utter beauty of "dimensionless measures" : the famous "cx" and "reynolds" coefficients ... |
