July 21st 05, 04:51 AM
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On Wed, 20 Jul 2005 22:06:35 -0500, (Richard
Harrison) wrote:
"I flipped the switch to a light bulb. What direction is the optical
power?"
Seriously, away from and toward are directions. We expect a light bulb
to be an energy source. If it becomes a sink it has a negative effect.
Hi Richard,
We are speaking of a load, often times an observer for optics, not a
source.
Then there is a serious answer to the observer standing in the field
of illumination and noting that there is power towards him, and power
away from him. This is a very ordinary occurence with a light bulb
that is within everyones common experience.
The light bulb in a room illuminates all the walls, the ceiling, and
the floor. The observer occupies some portion of that 3-space and can
confirm the "away from and toward directions." Still and all, the two
powers do not vectorally add to zero. If this is confounded by
stating that there are reflections, remove all such artifices and do
this in the void of space. The net result is that there is still no
vectoral addition that blacks out the light bulb simply because you
can exhibit "away from and toward directions."
There is still the mathematical representation of the direction using
standard notation if you want to take a swing at that. Again, what is
the vector of direction for the light bulb? Absurdities abound in
this discovery.
73's
Richard Clark, KB7QHC
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