Jim Kelley wrote:
"It may not be a terribly useful thing to know, but it isn`t a
ficticious quantity."

Agreed. Instantaneous power is real. My point is: Work is power x time.
If time is zero, no work is done.

Best regards, Richard Harrison, KB5WZI


Is the rate of doing work zero at all instances of time? Nope.
Power is the time rate of change for doing work. It's supposed to be
important to know the formula for finding the instantaneous
rate of doing work so you can ultimately find the average
rate. Maybe you think this is unimportant. I wonder why
textbook authors think it is?
73,
Tom Donaly, KA6RUH