On Wed, 20 Jul 2005 14:05:18 -0500, Cecil Moore
wrote:

Richard Clark wrote:

Richard Clark wrote:
yet another tantalizing, unanswerable question: What wavelength is Glare?

Dear Readers,

Richard, I am really worried about you arguing with your own
postings. The wavelength of glare from a single-frequency
coherent laser is obviously the same as the wavelength of the
laser's primary output beam. What else could it possibly be?

Golly gee, fellas, you two, Cecil and Richard C, you sure don't talk
nice to each other. But it sure is fun to sit back and listen to you
scream at each other. Just think, what would happen if Leno and
Letterman should be reading the mail? They'd kill each other to get
their hands on you for their nightly shows, and they could fire all
their present writers.

Walt

On Wed, 20 Jul 2005 15:56:04 -0400, Walter Maxwell
wrote:

They'd kill each other to get
their hands on you for their nightly shows, and they could fire all
their present writers.

Thanx Walt,

I'd be hard pressed for material without the stooge.

73's
Richard Clark, KB7QHC

It takes at least two stooges interacting to be funny.


"Richard Clark" wrote in message
...
On Wed, 20 Jul 2005 15:56:04 -0400, Walter Maxwell
wrote:

They'd kill each other to get
their hands on you for their nightly shows, and they could fire all
their present writers.

Thanx Walt,

I'd be hard pressed for material without the stooge.

73's
Richard Clark, KB7QHC

On Wed, 20 Jul 2005 17:28:03 -0400, "Fred W4JLE"
wrote:

It takes at least two stooges interacting to be funny.

Now taking applications.

Hi Fred,

It takes a condition called irony-deficit disorder to wade into these
things and say that. ;-)

Let's just give an example of the straight-man's lead into the joke:

"I flipped the switch to a 100W light Bulb.
What direction vector is the optical power?"

The Scientist would ask for this in standard notation, but we all know
that he isn't going to get that - hence, the subject from the
beginning is a joke. Now, only to wait for the punchline:
(drumroll) Ta-ta-dum....

73's
Richard Clark, KB7QHC

Richard Clark jested:
"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.

From John E. (Here`s Johnny!) Cinningham`s "The Complete Broadcast
Antenna Handbook", page 243:
"Again, if the base impedance is a negative number, this merely means
that energy is flowing out of a tower (toward the transmitter) instead
of into it (from the transmitter)."

Sign is certainly used to indicate the direction of energy movement or
the same thing, power flow.

Best regards, Richard Harrison, KB5WZI

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

Richard Clark wrote:
"Again, what is the vector of direction for the light bulb?"

Electromagnetic waves include light and heat whicjh have extremely short
wavelengths. The light bulb may not be a perfect point source but the
waves travel away from the source with the velocity of light and consist
of electric and magnetic fields that are at right angles to each other
and also at right angles to the direction of travel. Wave energy is
divided 50-50 between the electric and magnetic fields.

Many frequencies (colors) make up the radiation from a light bulb. Much
more heat is radiated than visible light.

In a radio wave the essential properties are frequency, intensity,
direction of travel, and plane of polarization, For the constituents of
light bulb radiation, it is the same.

300 million m/sec is the velocity and this equals the product of
frequency X wavelength. Emissions of a light bulb are of extremely high
frequency but of extremely short wavelenggth too.

All points on a wavefront are equidistant from the source and emerged
simultaneouslly so they share the same phase.. From a point source light
bulb we would be in the far field.

The field is transverse. The power flow (J.D. Kraus` words), or Poynting
vector, is entirely radial.

Best regards, Richard Harrison, KB5WZI

Richard Clark wrote:
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."

A light bulb does not emit coherent light so your
statement is 100% irrelevant to coherent RF sources
and/or coherent laser sources.
--
73, Cecil http://www.qsl.net/w5dxp


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