Keith Dysart wrote:

You are out on your
Harley doing 60 miles/hour. How far do you travel in 0
seconds?

So your point was?

That was my point. You made it for me.

I don't think the concept of instantaneous
power is mentioned at all in "Optics", by Hecht.

Ahhh. The difficulty is because you don't "think" that
the concept is mentioned in Hecht.

How did you manage to reply to a canceled posting?
--
73, Cecil http://www.w5dxp.com