RadioBanter

RadioBanter (https://www.radiobanter.com/)
-   Antenna (https://www.radiobanter.com/antenna/)
-   -   Can you solve this 2? (https://www.radiobanter.com/antenna/73853-can-you-solve-2-a.html)

Richard Clark July 21st 05 04:24 AM

On Wed, 20 Jul 2005 21:13:42 -0500, (Richard
Harrison) wrote:

Richard Clark wrote:
"The very first formula from the Standard Handbook for Electrical
Engineers, Section 11. Power Transmission, Electrical Calculsations:
I = P/E (1) "

Unless a d-c transmission is specified, that`s wrong.


Hi Richard,

You may disagree with the contents from this tome, but the citation is
accurate.

P=EI cos theta, where theta is the angle between E & I. For 0-deg. coa
theta=1.


The section preceding distribution is Section 10, Power Plants, which
devotes Para. 722 Inherent regulation; Para. 724 The Load Factor;
Para. 725 Load Fluctuation; Para. 726 The Power-Factor.
Sections10-795 through 836 is given over to AC switching.

And of course casting back towards the beginning of the Handbook we
find ourselves at Section 7, Alternating Current Generators which
covers Power-Factor, Slip, Stalling torque.... The treatment later in
the section covers representative efficiencies in Polyphase equipment
up to 1000HP well into the 90's of percent. All may note that this is
an accuracy that is still 10 times better than the "Can you solve
this" math offered here.

Returning to Section 11, Power Transmission; coverage there includes
Power-Factor Correction. Para. 95, in part:
The per cent, quadrature current required for unity power-factor
[which renders the formula responded to as accurate] at the
receiver may be determined from Fig. 14, or may be calculated
for a three-phase system as follows.... [which I won't go into
but covers power-factors from 60% to 95%].

There is still no requirement to fill the need for a vector of
direction.

This relates, in part, to my service in the Power Industry designing
power grid control systems and testers (SCADA).

73's
Richard Clark, KB7QHC

Richard Clark July 21st 05 04:35 AM

On Wed, 20 Jul 2005 20:13:21 -0500, (Richard
Harrison) wrote:

Of course, in the case of the open=circuited load, the reflection takes
place with reversal in phase of the current and without change in phase
of the voltage.

Terman`s writing has stood siuccessfully unchallenged for at least 50
years.


Hi Richard,

Where does he equate phase with direction? If I observe a negative
phase shift in an otherwise pure cycle on wire-pair, does Terman teach
that Power is flowing backwards?

Having used Terman's work as the basis for the course of instruction
in the Navy, no such concept has ever been offered. 50 years after
his last opus, and several years after his death is rather late to
start claiming Terman missed the train - and should have said it.

I can appreciate that you have missed the disjoints of testimony that
have lead from offering pi = 22/7 to the conclusion that the earth is
flat, but don't get caught in responding to the flurry of uncorrelated
statements offered to fill the void of accurate reporting.

73's
Richard Clark, KB7QHC

Richard Harrison July 21st 05 04:41 AM

Ian White, GM3SEK wrote:
"That statement bears no physical relationship to how this instrument
actually works---."

We`ve been through detailled explanations of how a Bird works. Cecil did
not need to do another. The wattmeter takes actual samples of the
voltages and currents at any single point on the coax. These are
representative of the powers which are moving toward the load and away
from the load. Careful calibration allows indicarions in watts.

An electric current through a speedometer is calibrated to indicate
miles per hour. It works. So does the Bird Wattmeter.

Best regards, Richard Harrison, KB5WZI


Richard Clark July 21st 05 04:51 AM

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 Harrison July 21st 05 05:43 AM

Richard Clark wrote:
"Where does he (Terman) equate phase with direction?"

From page 90 of Terman`s 1955 edition:
Bottom of the page; "Transmission Line with Short-circuited Load.
Where the load end of the line is short-circuited, that is ZL=0,
reference to Eq.(4-14) shows the reflection coeficient has a value of
-1.0 on an angle of 0-deg. = +1.0 on an angle of 180-deg. As in the
open-circuited case, the reflected wave has an amplitude equal to the
amplitude of the incident wave. However, the reflection takes place with
reversal in phase of voltage and without change in phase of the
current."

I`m a lousy typist but tried to make an exact copy of part of the page.
I assume you agree the incident and reflected waves travel in opposite
directions in Terman`s example.

Best regards, Richard Harrison, KB5WZI


Richard Clark July 21st 05 07:10 AM

On Wed, 20 Jul 2005 23:43:38 -0500, (Richard
Harrison) wrote:

I`m a lousy typist but tried to make an exact copy of part of the page.
I assume you agree the incident and reflected waves travel in opposite
directions in Terman`s example.


Hi Richard,

Certainly, but nowhere does Terman instruct us that this vector is a
direction, it is a phasor. The coincidence of direction is imposed by
the termination, not the math - hence the math is exclusive of such
representations of direction.

However, let's discard that difference as a triviality to examine the
original proposition thus:
To obtain a complete cancellation it requires identical powers with
identical but opposing phases. You would agree that without this
condition there is no complete cancellation?

73's
Richard Clark, KB7QHC

Richard Harrison July 21st 05 07:24 AM

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 Harrison July 21st 05 07:39 AM

Richard Clark wrote:
"To obtain a complete cancellation it requires identical powers with
identical but opposing phases."

Yes. That is why closely spaced balanced transmission lines have no
significant radiation.

Best regards, Richard Harrison, KB5WZI


Ian White G/GM3SEK July 21st 05 08:02 AM

Cecil Moore wrote:
Ian White G/GM3SEK wrote:

Cecil Moore wrote:
The Bird is indirectly measuring [(E^for) x (H^for)] as forward
power and [(E^ref) x (H^ref)] as reflected power.

That statement bears no physical relationship to how the instrument
actually works (and "indirectly" won't get you off the hook either).


I was hoping someone would assert such. E^for is proportional to
Vfor which is what the Bird samples. H^for is proportional to
Ifor which is what the Bird samples. Within a 50 ohm environment
that yields forward power. Same for reflected power.


The Bird does not generate a vector cross product. There is nothing
inside the instrument that's capable of doing such a thing.

The hardware displays readings of detected RF voltages - not power. The
forward/reflected power calibration on the meter scale is an external
calculation, based on transmission line theory.

You know exactly how instruments like the Bird work, because at various
times you have posted accurate descriptions here. Your enthusiasm for
your pet theory is making you distort the truth.


--
73 from Ian G/GM3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek

Richard Clark July 21st 05 08:57 AM

On Thu, 21 Jul 2005 01:24:36 -0500, (Richard
Harrison) wrote:

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


Hi Richard,

Actually that is quite wrong. IR is not heat, it is radiation. Heat,
actually phonons, constitutes something less that 10% of the
conversion of electrical power in a light bulb. Lest we take off on
the tangent of IR bulbs being used for heating, it is the load of that
IR radiation (directed upon a dissipative surface) that renders
phonons, otherwise IR is radiated in exactly the same manner as any
radiation. There are any number of simple, practical tests to confirm
this. For one, IR passes through most glass without heating it. You
have to go out of your way to obtain IR blocking glass (which doesn't
even absorb that much either). There are some IR wavelengths that go
right through water, and others that are entirely absorbed.

However, this is not about heat, nor IR, nor even the loss of a
principle vector property, its angle notation, or even the whole
absence of the vector property from the solution to wave interference
powers. Rather, it is about the facade of complete cancellation

Entirely ignoring all these other trivial details, that cancellation
is incomplete in and of necessity for real or imagined initial
conditions. This is revealed in any mathematical solution, and
certainly by examination.

73's
Richard Clark, KB7QHC

Ian White G/GM3SEK July 21st 05 09:29 AM

Richard Harrison wrote:
Ian White, GM3SEK wrote:
"That statement bears no physical relationship to how this instrument
actually works---."

We`ve been through detailled explanations of how a Bird works. Cecil did
not need to do another. The wattmeter takes actual samples of the
voltages and currents at any single point on the coax. These are
representative of the powers which are moving toward the load and away
from the load. Careful calibration allows indicarions in watts.

An electric current through a speedometer is calibrated to indicate
miles per hour. It works. So does the Bird Wattmeter.


The difference is that nobody is trying to create a complete distortion
of the way a speedometer works.

I am not criticizing the Bird 43 at all. I own one, and use it
regularly. It is a clever concept, well executed and with lots of good
features.

My objection is against the "other Bird 43" - not the real hardware, but
a piece of vaporware that is called a "Bird" but only exists in
someone's imagination. Somehow, this imagined instrument can truly
*measure* how much power is flowing in the forward and reverse
directions, and those measurements can be used to "prove" some point
about transmission line theory.

The real-life Bird 43 cannot do that. Its indications of "forward and
reflected watts" are only printing on the meter scale. They come from
calculations that are totally dependent on transmission line theory, so
they cannot be used to prove anything *about* that subject.

You cannot prove a theory by using evidence that depends on the theory
you're trying to prove. That is just simple logic.

The real Bird 43 is a good and useful piece of test equipment... but
nobody should buy that "other" one.


--
73 from Ian G/GM3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek

Cecil Moore July 21st 05 12:48 PM

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


----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups
---= East/West-Coast Server Farms - Total Privacy via Encryption =---

Cecil Moore July 21st 05 12:53 PM

Richard Harrison wrote:
I`m a lousy typist but tried to make an exact copy of part of the page.
I assume you agree the incident and reflected waves travel in opposite
directions in Terman`s example.


All part of the reflection model. Ramo & Whinnery go so far
as to present separate Poynting vectors for forward and
reflected powers where Pz-/Pz+ is the power reflection
coefficient.
--
73, Cecil http://www.qsl.net/w5dxp


----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups
---= East/West-Coast Server Farms - Total Privacy via Encryption =---

Cecil Moore July 21st 05 01:05 PM

Richard Clark wrote:
To obtain a complete cancellation it requires identical powers with
identical but opposing phases. You would agree that without this
condition there is no complete cancellation?


What you have described is exactly what happens at a
Z0-match point.
--
73, Cecil http://www.qsl.net/w5dxp


----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups
---= East/West-Coast Server Farms - Total Privacy via Encryption =---

Cecil Moore July 21st 05 01:10 PM

Richard Harrison wrote:
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 big difference is that a light bulb doesn't emit
coherent light. Coherence is a requirement for
superposition and wave cancellation. The light bulb
example is simply irrelevant to what happens with
a single frequency coherent RF transmitter or a
single frequency coherent laser.
--
73, Cecil http://www.qsl.net/w5dxp


----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups
---= East/West-Coast Server Farms - Total Privacy via Encryption =---

Cecil Moore July 21st 05 01:23 PM

Ian White G/GM3SEK wrote:
The Bird does not generate a vector cross product. There is nothing
inside the instrument that's capable of doing such a thing.


Didn't say it did, Ian. Using valid assumptions like E/H=Z0
and E-field forward + E-field reflected = E-field total,
the multiplication is performed by a combination of phasor
addition, linear addition, and non-linear scaling. It is
an analog calculator.

The hardware displays readings of detected RF voltages - not power. The
forward/reflected power calibration on the meter scale is an external
calculation, based on transmission line theory.


Yes, based on samples of a voltage proportional to the E-field
and samples of a current proportional to the H-field. Given the
basic assumptions of the Bird, it can be proven mathematically
that the Bird is displaying E-field x H-field for forward power
if the slug arrow is pointed in the forward direction and
displaying E-field x H-field for reflected power if the slug
arrow is pointed in the reflected direction.

You know exactly how instruments like the Bird work, because at various
times you have posted accurate descriptions here. Your enthusiasm for
your pet theory is making you distort the truth.


The Poynting Vector is ***NOT*** my pet theory, Ian, it is
mainstream RF engineering.

All I am saying is that the Bird samples a voltage proportional
to the E-field and samples a current proportional to the H-field.
It then performs analog calculations on those parameters.
If you think you can disprove that statement, be my guest.
--
73, Cecil http://www.qsl.net/w5dxp


----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups
---= East/West-Coast Server Farms - Total Privacy via Encryption =---

Cecil Moore July 21st 05 01:29 PM

Richard Clark wrote:
Entirely ignoring all these other trivial details, that cancellation
is incomplete in and of necessity for real or imagined initial
conditions.


That's not true, Richard. If zero reflected energy reaches the
source in a system with reflections, a Z0-match has been
achieved. For a Z0-match to be achieved, 100% wave cancellation
is necessary. For all the nearly perfectly Z0-matched systems
out there, near perfect wave cancellation of reflected waves
has been achieved.
--
73, Cecil http://www.qsl.net/w5dxp


----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups
---= East/West-Coast Server Farms - Total Privacy via Encryption =---

Ian White G/GM3SEK July 21st 05 02:07 PM

Cecil Moore wrote:
Ian White G/GM3SEK wrote:
The Bird does not generate a vector cross product. There is nothing
inside the instrument that's capable of doing such a thing.


Didn't say it did, Ian. Using valid assumptions like E/H=Z0
and E-field forward + E-field reflected = E-field total,
the multiplication is performed by a combination of phasor
addition, linear addition, and non-linear scaling.


As you begin to admit when challenged, the instrument itself does
nothing but add or subtract RF voltages derived by sampling the line
voltage and current. No multiplication is involved.

The calibration to indicate power is performed ENTIRELY on the meter
scale. But the instrument didn't do the multiplication or the I^2R
calculation, so it didn't actually measure power.

It is
an analog calculator.

No, it isn't. The guy who drew the meter scale did the power
calculation. The instrument itself is incapable of multiplying anything.


All I am saying is that the Bird samples a voltage proportional
to the E-field and samples a current proportional to the H-field.
It then performs analog calculations on those parameters.
If you think you can disprove that statement, be my guest.


Ah, the old bait and switch trick.

In your earlier statement you said it "performs multiplication", which
is totally false. But for your final paragraph you've switched it to
"analog calculations", which is more general and thus partly true; and
then you invite me to disprove that.

Cecil, I don't think you even realise you're pulling these dishonest
debating tricks... but after too many years to count, I just don't have
any more time for them.

plonk



--
73 from Ian G/GM3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek

Richard Harrison July 21st 05 03:47 PM

Richard Clark wrote:
"Actually that is quite wrong. IR is not heat."

He got me. According to Lincoln`s Industrial Reference, from a 100-watt
MAZDA lamp the amount of energy emanating as light is 10%, and as
infrared is 72%. The rest is lost to gas end loss, etc. The loss would
be only 18% You can`t see infrared. The eye is most sensitive to a
yellow-green color around 5550 Angstrom units. Lamps are made to
emphasize white or "daylight" which is rated at about 2400 to 3100
degrees Kelvin.

Best regards, Richard Harrison, KB5WZI


Tom Donaly July 21st 05 04:05 PM

Ian White G/GM3SEK wrote:
Cecil Moore wrote:

Ian White G/GM3SEK wrote:

The Bird does not generate a vector cross product. There is nothing
inside the instrument that's capable of doing such a thing.



Didn't say it did, Ian. Using valid assumptions like E/H=Z0
and E-field forward + E-field reflected = E-field total,
the multiplication is performed by a combination of phasor
addition, linear addition, and non-linear scaling.



As you begin to admit when challenged, the instrument itself does
nothing but add or subtract RF voltages derived by sampling the line
voltage and current. No multiplication is involved.

The calibration to indicate power is performed ENTIRELY on the meter
scale. But the instrument didn't do the multiplication or the I^2R
calculation, so it didn't actually measure power.

It is
an analog calculator.

No, it isn't. The guy who drew the meter scale did the power
calculation. The instrument itself is incapable of multiplying anything.


All I am saying is that the Bird samples a voltage proportional
to the E-field and samples a current proportional to the H-field.
It then performs analog calculations on those parameters.
If you think you can disprove that statement, be my guest.



Ah, the old bait and switch trick.

In your earlier statement you said it "performs multiplication", which
is totally false. But for your final paragraph you've switched it to
"analog calculations", which is more general and thus partly true; and
then you invite me to disprove that.

Cecil, I don't think you even realise you're pulling these dishonest
debating tricks... but after too many years to count, I just don't have
any more time for them.

plonk




Another day, another plonk. Repent! Cecil, before everyone plonks
you.
73,
Tom Donaly, KA6RUH

Richard Harrison July 21st 05 04:28 PM

Ian White, G3SEK wrote:
"In your previous statement you said it "performs multiplication" which
is totally false."

It gives the right answers so it is not false.

Multiplication is the process of finding the product resulting from the
addition of a given number by a certain number of times as there are
units in another number.

It`s the product that counts, not the way you get there. An amplifier
with a certain gain is fine. A lever that trades force for distance is
fine. A digital machine, having no hardwired multiply and divide circuit
and only works with ones and zeros is fine.

The only important thing is you supply representative inputs to a device
and it gives you the correct product of the numbers as its outpot.

Best regards, Richard Harrison, KB5WZI


Richard Harrison July 21st 05 05:01 PM

Cecil. W5DXP wrote:
In a transmission line, there is only one "new direction", the opposite
direction."

Tes, and there is no cumulative long-term buildup on the line. We could
sense an accumulation. The energy in the steady state is lost on the
line or dissipated in lhe load or source.

Best regards, Richard Harrison, KB5WZI


Richard Clark July 21st 05 05:20 PM

straightman:
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."


[.... Ta-da-dum!]

stooge:
A light bulb does not emit coherent light so your
statement is 100% irrelevant to coherent RF sources
and/or coherent laser sources.


straightman:
And if that source WERE entirely coherent?

[Ba-Boom!]

scientist (wearing white lab coat steps from behind curtain):
The observer would still perceive as much light;
and absolutely none of it would destructively/constructively
interfere.

Simply because the source can exhibit "away from and toward
directions" is wholly immaterial. Direction vectors and power
have nothing to do here.

[voice over and closing music]:
Ladies and gentlemen. The experiments performed here
should not be attempted at home. Further, please do not
plonk the stooge on stage as his performance is part of our
audience's instruction and distracts their attention.

We thank your patronage and look forward to more skits. :-)

Jim Kelley July 21st 05 06:24 PM



Cecil Moore wrote:

Jim Kelley wrote:

I think I'll stick with just saying that power, as a scaler quantity
does not have direction and cannot be negative.



So what is E^ x H^?


According to Born and Wolf, it's "an abstraction that introduces a
certain degree of arbitrariness". On the other hand it's integral over
a volume is described as something from which "no unambiguous conclusion
can be drawn". So, is that what you're hangin' your hat on, there Cecil?

Or perhaps you would have preferred my response to be "it's whatever you
sez it is, massa mensa".

ac6xg



Jim Kelley July 21st 05 06:38 PM



Cecil Moore wrote:

Richard Clark wrote:

To obtain a complete cancellation it requires identical powers with
identical but opposing phases. You would agree that without this
condition there is no complete cancellation?



What you have described is exactly what happens at a
Z0-match point.


Except that power and energy, like mass and time, aren't things which
'cancel'. Fields on the other hand can superpose, interfere, and cancel.

73, ac6xg


Richard Clark July 21st 05 06:45 PM

On Thu, 21 Jul 2005 09:47:12 -0500, (Richard
Harrison) wrote:

Richard Clark wrote:
"Actually that is quite wrong. IR is not heat."

He got me. According to Lincoln`s Industrial Reference, from a 100-watt
MAZDA lamp the amount of energy emanating as light is 10%, and as
infrared is 72%. The rest is lost to gas end loss, etc. The loss would
be only 18% You can`t see infrared. The eye is most sensitive to a
yellow-green color around 5550 Angstrom units. Lamps are made to
emphasize white or "daylight" which is rated at about 2400 to 3100
degrees Kelvin.


Hi Richard,

Well, your ability to research the topic continues well in advance of
other's effort. Some may note the congruence of the specified
emission peak and my statements earlier choosing exactly this same
wavelength. This is called the eye's photopic response, but at night
it shifts slightly to become more sensitive in its scotopic response.
This is rod vision and occurs around the 510nM (5100Å) wavelength or a
pale blue.

The unintended consequence of this is that it suppress the eye's
ability to perceive red light at night (why you see them used in dark
rooms and WWII movies) which is something of a bummer for traffic
lights and taillights (they have to be brighter than they would be
normally).

Also, this discussion bears upon the answer to
"What is the wavelength of Glare?"
that has remained undiscovered by binary engineers. I bet our Readers
can catch this clue. :-)

73's
Richard Clark, KB7QHC

Richard Harrison July 21st 05 10:17 PM

Richard Clark wrote:
"The unintended consequence of this (exposure to white light) is that it
suppresses the eye`s ability to perceive red light at night (why you see
them (red lights) used in dark rooms and WWII movies--..)"

I was in WW-2 and confirm that aboard my ship our chartroom (the
compartment with an opening tp tje outside) indeed was illuminated with
red lamps so that we would not be blind when we stepped outside. We were
told that we used our cones in the daytime and our rods at night. How
could I ever have remembered that?

From Lincoln`s Reference: Glare is said to reduce the ability to see,
and hastens fatigue. Glare is wasted since it lowers the effectiveness
of useful light. Glare is high light energy over a measurable period of
time from above normal angles of vision (30 to 90-degrees above the
vertical). I think this means you don`t want a bright light shining in
your eyes. It`s glaring and impairs vision for awhile.

I wasn`t a signalman but I noticed our signaling light was fitted at
night with a red filter called the "Nan-gear". Our phonetic alphabet in
those days went: able, baker, charlie, dog---nancy. I suppose Nan was
short for nighttime gear. I speculate it was hoped that the enemy would
step out of white lighted quarters and not notice our red signal beams.
So much for red lights and glare.

It probably wouldn`t work, but you might say to the policeman: I didn`t
see the red light. The white glare desensitized my eyes!

Best regards, Richard Harrison, KB5WZI


Fred W4JLE July 21st 05 10:59 PM

Nan gear was infra-red, not red. The purpose was to be non detectable
without special equipment.

"Richard Harrison" wrote in message
...
Richard Clark wrote:

I wasn`t a signalman but I noticed our signaling light was fitted at
night with a red filter called the "Nan-gear". Our phonetic alphabet in
those days went: able, baker, charlie, dog---nancy. I suppose Nan was
short for nighttime gear. I speculate it was hoped that the enemy would




Richard Clark July 21st 05 11:27 PM

On Thu, 21 Jul 2005 16:17:13 -0500, (Richard
Harrison) wrote:

From Lincoln`s Reference: Glare is said to reduce the ability to see,
and hastens fatigue. Glare is wasted since it lowers the effectiveness
of useful light. Glare is high light energy over a measurable period of
time from above normal angles of vision (30 to 90-degrees above the
vertical). I think this means you don`t want a bright light shining in
your eyes. It`s glaring and impairs vision for awhile.


Hi Richard,

Your continued research into the topic that the originator could not
identify reveals the problems of Glare being a subjective response and
not a technical specification.

However, I have already provided technical clues to answer:
"What is the wavelength of Glare?"
that has so far evaded absolutely any response from our binary
engineer.

So far the suggestions have been that it matters to a WHO, and there
is a practical WHY to reveal the WHEREFORE. The differences in
Photopic and Scotopic vision narrow down the wavelength, but there is
a vast gulf between them. Even being a binary choice, there is still
the chance of being wrong that puts the gag on his stepping forward
with an answer. In the end I will be alone in completing this I
suppose. It will cap off my full mathematical treatment and the
exposure of this full cancellation that is TEN TIMES BRIGHTER THAN THE
SUN ;-)

This topic of Glare, being his alone, has subsequently been identified
by him as being inconsequential detail, or better yet, wholly from my
distorted imagination (but only when I examine this point).

There is still much to mine here. With errors so abundant, it is
difficult to choose any one aspect and not have to correct three
aspects of its distortions.

73's
Richard Clark, KB7QHC

Cecil Moore July 22nd 05 01:07 AM

Ian White G/GM3SEK wrote:
As you begin to admit when challenged, the instrument itself does
nothing but add or subtract RF voltages derived by sampling the line
voltage and current.


You missed the point, Ian. THE VOLTAGE SAMPLE IS DIRECTLY
PROPORTIONAL TO THE E-FIELD AND THE CURRENT SAMPLE IS DIRECTLY
PROPORTIONAL TO THE H-FIELD. Given the assumptions about the
boundary conditions in which the Bird is placed, the Bird is
INDEED indicating the value of the Poynting Vector no matter
how indirectly. IF IT WASN'T, BIRD COULD NOT REMAIN IN BUSINESS.
That's what Bird Wattmeters do - indicate the magnitude and
direction of the Poynting Vector - assuming the instrument is
properly used.

Pz+ = E^for x H^for = Bird wattmeter reading for slug ==

Pz- = E^ref x H^ref = Bird wattmeter reading for slug ==

This is all covered in "Fields and Waves ..." by Ramo and
Whinnery. I have NOT introduced anything new. I have simply
tied together some loose ends from all the references available.
Anyone with an open and logical mind could have done exactly
the same thing.

No multiplication is involved.


On the contrary, non-linear calibration of linear meters is an
old technique for analog multiplication. I assumed you knew that
already, but maybe you are not that old. When I was in college,
we put a '1' mark at one milliamp. We put a '4' mark at 2 milliamps.
We put a '16' mark at 4 milliamps. It's a very, very, very old
technique for analog multiplication.

The calibration to indicate power is performed ENTIRELY on the meter
scale.


EXACTLY!!! YOU GOT IT!!! THAT'S ANALOG MULTIPLICATION!!! I did the
exact same thing for analog multiplication when I was in college.
Non-linear calibration of linear meters is a very, very, very old
analog computing technique. Do you even remember analog computers?
If not, I can loan you my analog computing college textbook.

It is an analog calculator.

No, it isn't.


Yes, it is. I learned all those analog techniques while in
college at Texas A&M in the 50's. Maybe you should review
a very old reference on the subject. When I was in college,
analog computers were more popular than digital computers.
Op-amps using tubes were more numerous than anything digital
(and the Texas A&M mascot was a T-Rex). You young sprouts are
just digitally-spoiled brats. :-)

In your earlier statement you said it "performs multiplication", which
is totally false. But for your final paragraph you've switched it to
"analog calculations", which is more general and thus partly true; and
then you invite me to disprove that.


It INDEED does perform analog multiplication, Ian, through the non-
linear calibration of the linear meter. I'm not trying to confuse
anyone. I just assumed you knew that already. Some of the OF's on
this newsgroup can verify what I am saying.

Cecil, I don't think you even realise you're pulling these dishonest
debating tricks... but after too many years to count, I just don't have
any more time for them.


Your ignorance does NOT equate to dishonesty on my part, Ian.
Is admitting ignorance ever worth sacrificing integrity?

plonk


Ian, instead of plonking me, as Roy did, why don't you just prove
me wrong? Wouldn't that be extremely easy given how wrong you assert
that I am?
--
73, Cecil http://www.qsl.net/w5dxp

----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----

Cecil Moore July 22nd 05 01:11 AM

Tom Donaly wrote:
Another day, another plonk. Repent! Cecil, before everyone plonks
you.


Hey Tom, have you noticed the only time I get ploinked is
when some guru is on the verge of losing an argument? Is
saving face worth sacrificing integrity?
--
73, Cecil http://www.qsl.net/w5dxp

----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----

Cecil Moore July 22nd 05 01:14 AM

Richard Harrison wrote:

Ian White, G3SEK wrote:
"In your previous statement you said it "performs multiplication" which
is totally false."

The only important thing is you supply representative inputs to a device
and it gives you the correct product of the numbers as its outpot.


Apparently, Ian is too young to remember analog multiplication
by non-linearly calibrating the face of linear meters which is
exactly what Bird does.
--
73, Cecil http://www.qsl.net/w5dxp

----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----

Cecil Moore July 22nd 05 01:19 AM

Richard Clark wrote:
straightman:
And if that source WERE entirely coherent?


If that source were entirely coherent, superposition
between the forward waves and reflected waves would
result, obeying the laws of physics. Some areas could
be very bright obeying the total constructive interference
equation. Some areas could be totally black obeying the
total destructive interference equation. You really
should read _Optics_, by Hecht and get back to us.

The above is EXACTLY how antenna radiation patterns
are achieved.
--
73, Cecil http://www.qsl.net/w5dxp

----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----

Cecil Moore July 22nd 05 01:23 AM

Jim Kelley wrote:

Cecil Moore wrote:
So what is E^ x H^?


According to Born and Wolf, it's "an abstraction that introduces a
certain degree of arbitrariness". On the other hand it's integral over
a volume is described as something from which "no unambiguous conclusion
can be drawn". So, is that what you're hangin' your hat on, there Cecil?


Actually, the Poynting Vector is extremely well defined *AND* well
accepted in the RF engineering community. Do you really reject the
Poynting Vector concept? If so, that explains everything.
--
73, Cecil http://www.qsl.net/w5dxp

----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----

Cecil Moore July 22nd 05 01:33 AM

Jim Kelley wrote:

Cecil Moore wrote:
What you have described is exactly what happens at a
Z0-match point.



Except that power and energy, like mass and time, aren't things which
'cancel'. Fields on the other hand can superpose, interfere, and cancel.


You're still presenting that straw man riding that dead horse.
Please read my lips, Jim. *ENERGY CANNOT BE CANCELED*!!! Waves
can be canceled but the energy in the canceled waves must
change direction in a transmission line because there are
only two directions available. When fields cancel in one
direction, the energy in the fields must be re-distributed
in another direction. Given two, and only two, directions for
that re-distribution in a transmission line, what is it about
the following that you refuse to understand?

"... when two waves of equal amplitude and wavelength that are
180-degrees ... out of phase with each other meet, they are not
actually annihilated. All of the photon energy present in these
waves must somehow be recovered or redistributed in a new direction,
according to the law of energy conservation ... Instead, upon meeting,
the photons are redistributed to regions that permit constructive
interference, so the effect should be considered as a redistribution
of light waves and photon energy rather than the spontaneous
construction or destruction of light."
--
73, Cecil http://www.qsl.net/w5dxp

----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----

Cecil Moore July 22nd 05 01:35 AM

Richard Clark wrote:
Also, this discussion bears upon the answer to
"What is the wavelength of Glare?"
that has remained undiscovered by binary engineers. I bet our Readers
can catch this clue. :-)


Richard, you apparently are not reading my postings. The
wavelength of glare is exactly the same as the wavelength
of the single-frequency coherent laser forward wave
emissions. Do you want me to re-post the equation for
wavelength Vs frequency?
--
73, Cecil http://www.qsl.net/w5dxp

----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----

Cecil Moore July 22nd 05 01:45 AM

Richard Harrison wrote:
It probably wouldn`t work, but you might say to the policeman: I didn`t
see the red light. The white glare desensitized my eyes!


There was a guy in my home town, who for decades, honked his
horn when encountering a red light, because he was color blind.
Everyone knew he would just blow through a red-light, honking
his horn, so everyone gave him the right-of-way. Finally, he
encountered a deaf person ...
--
73, Cecil http://www.qsl.net/w5dxp

----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----

Cecil Moore July 22nd 05 01:49 AM

Richard Clark wrote:
This topic of Glare, being his alone, has subsequently been identified
by him as being inconsequential detail, ...


EXACTLY!!! When the glare is exactly the same frequency as the
forward laser beam, and when refraction has been eliminated,
as it is in a transmission line, your postings become completely
irrelevant, but I am not surprised since you seem to be protecting
some cow you consider to be sacred.
--
73, Cecil http://www.qsl.net/w5dxp

----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----

Jim Kelley July 22nd 05 01:51 AM



Cecil Moore wrote:

Jim Kelley wrote:

Cecil Moore wrote:

What you have described is exactly what happens at a
Z0-match point.




Except that power and energy, like mass and time, aren't things which
'cancel'. Fields on the other hand can superpose, interfere, and cancel.



You're still presenting that straw man riding that dead horse.
Please read my lips, Jim. *ENERGY CANNOT BE CANCELED*!!!


Then my reminder of that fact (above) must have served its purpose. I
wrote it in response to your claim that power cancels at a Z0-match
point. Hellooooo... anybody home?

ac6xg



Cecil Moore July 22nd 05 02:09 AM

Jim Kelley wrote:

Cecil Moore wrote:
You're still presenting that straw man riding that dead horse.
Please read my lips, Jim. *ENERGY CANNOT BE CANCELED*!!!


Then my reminder of that fact (above) must have served its purpose. I
wrote it in response to your claim that power cancels at a Z0-match
point. Hellooooo... anybody home?


If I ever said, "Power cancels at a Z0-match", I made a mistake.
I don't think I ever said that and I believe that to be only one
of your numerous straw men, but if you will provide a valid reference,
I will take it back and appologize for my mental mistake. I am not
perfect, BUT the onus of proof is upon you. You can provide a reference
for your assertions, can't you, Jim? :-) (In case you missed it, this
is a challenge to your integrity.)
--
73, Cecil http://www.qsl.net/w5dxp

----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----


All times are GMT +1. The time now is 02:28 PM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
RadioBanter.com