"Larry Dighera" wrote in message
...
On Thu, 6 Jan 2005 20:30:00 +0000 (UTC), "Franz Heymann"
wrote in
::


"Larry Dighera" wrote in message
.. .
On Thu, 06 Jan 2005 17:32:43 GMT, "G.R. Patterson III"
wrote in ::

Larry Dighera wrote:

If I'm not mistaken, coherent laser light is all in phase.
Doesn't
that cause it to have more energy?

No, but it will deliver more energy in the visible spectrum, and
it
can be tuned
to deliver most of its energy in a very narrow band, which a
typical
incandescent light source cannot.

I'm way out of my depth on this subject, but this is the way I
understand the physics of coherent light verses light that is not
coherent.

Because the photons of coherent light arrive at the target at the
same
time, they "pound" harder against the surface upon which they
impinge
than they would if they arrived at varying times. I imagine the
physics to be similar to sonic resonance. So perhaps the photons
don't have more energy, but they have a greater effect than light
that
is not coherent.

I am afraid your concept of what constitutes a coherent source of
light is completely wrong. Why don't you read up something on the
topic?
In the meantime, it might be better if you restricted your
interests
to aviation.

Franz


[sci.physics,sci.physics.electromag added]


Thank you for your helpful, insightful, and enlightening response,
Franz. I always welcome informative follow up articles such as
yours.
Please accept my sincere thanks for your thoughtful deliberation,
astute tutelage, and avuncular assistance. I'm sure scientists
everywhere find your attitude representative of the best they are
able
to offer. :-)

Always glad to be of service
{:-))

Franz