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Cecil Moore February 3rd 07 02:43 AM

Thread gone astray was Antennas led astray
 
Richard Clark wrote:
The world waits in wonder at your assertion of Einstein's ability to
set the speed of light and time - especially when it had been
investigated and quantified by many earlier workers, notably Michelson
and Morely.


Please Google "relativity" and "Lorentz transforms"
for the technical facts as presented by Einstein.
--
73, Cecil http://www.w5dxp.com

Cecil Moore February 3rd 07 02:52 AM

Thread gone astray was Antennas led astray
 
Richard Clark wrote:
Cecil Moore wrote:
One thing had to be nailed down and Einstein chose the speed of light.


Fact of the matter was previous to Michelson and Morely's work, a
Scottish fellow by the name of Maxwell had already DEFINED the speed
of light.


I never said or implied that Einstein "DEFINED the speed
of light", only that he "nailed it down" in his equations
as the one universal constant - while all other parameters
are subject to relativity effects.
--
73, Cecil http://www.w5dxp.com

Richard Clark February 3rd 07 03:13 AM

Thread gone astray was Antennas led astray
 
On Fri, 02 Feb 2007 20:52:38 -0600, Cecil Moore
wrote:

I never said or implied that Einstein "DEFINED the speed
of light", only that he "nailed it down" in his equations
as the one universal constant - while all other parameters
are subject to relativity effects.


Let's face it, you never really say anything in the end. We can see
this in the guff like that above. "nailed it down," now there's a
charming non-sequitur. Maxwell preceded him by decades with the
definition of the speed of light - Einstein certainly nailed nothing
there. Maxwell's equations are nothing if not universally applicable,
Einstein didn't add anything that pounded any nail there either. And
to hail-Mary it with
while all other parameters
are subject to relativity effects.

contradicts Einstein explicitly in that he taught that "all laws of
physics are the same within all inertial frames of reference."
Einstein did not exclude anything.

[email protected] February 3rd 07 03:25 AM

Thread gone astray was Antennas led astray
 
Cecil Moore wrote:
Richard Clark wrote:
Cecil Moore wrote:
One thing had to be nailed down and Einstein chose the speed of light.


Fact of the matter was previous to Michelson and Morely's work, a
Scottish fellow by the name of Maxwell had already DEFINED the speed
of light.


I never said or implied that Einstein "DEFINED the speed
of light", only that he "nailed it down" in his equations
as the one universal constant - while all other parameters
are subject to relativity effects.
--
73, Cecil http://www.w5dxp.com


permittivity of free space, permeability of free space, radian...

--
Jim Pennino

Remove .spam.sux to reply.

Cecil Moore February 3rd 07 03:29 AM

Thread gone astray was Antennas led astray
 
Richard Clark wrote:
Let's face it, you never really say anything in the end. We can see
this in the guff like that above. "nailed it down," now there's a
charming non-sequitur. Maxwell preceded him by decades with the
definition of the speed of light - Einstein certainly nailed nothing
there.


Einstein was the first to nail down the speed of light
in free space as an absolute in his relativity equations.
You can verify that fact by Googling "relativity".
--
73, Cecil http://www.w5dxp.com

Richard Clark February 3rd 07 07:49 AM

Thread gone astray was Antennas led astray
 
On Sat, 03 Feb 2007 03:29:38 GMT, Cecil Moore
wrote:
You can verify that fact by Googling "relativity".


Sounds like Xerox logic. Appeal to the authority of Google pretty
much puts Einstein into the garbage can like a moldy rind.

Richard Clark February 3rd 07 08:14 AM

Thread gone astray was Antennas led astray
 
On Sat, 03 Feb 2007 03:25:02 GMT, wrote:

I never said or implied that Einstein "DEFINED the speed
of light", only that he "nailed it down" in his equations
as the one universal constant - while all other parameters
are subject to relativity effects.
--
73, Cecil
http://www.w5dxp.com

permittivity of free space, permeability of free space, radian...


Hi Jim,

You are treading on Cecil's toes in this dance. Soon we may have to
reveal the Lorentzian transformation.

It was Lorentz that described time dilation (using the speed of light)
in 1887 and formalized in 1899, and it was Poincaré who introduced
this math in 1905, not Einstein.
he "nailed it down" in his equations

is an slur on Maxwell, Lamor, Lorentz, and Poincaré's contributions
that predate Einstein by decades.

But I am not surprised. Lorentzian transformations are alluded to
here in this forum in recent speculations; and they are thoroughly
botched because so few are even vaguely familiar with his work.

Cecil, your habit of hugging the corpses of intellectuals does not
raise your IQ.

73's
Richard Clark, KB7QHC

Cecil Moore February 3rd 07 01:12 PM

Thread gone astray was Antennas led astray
 
Richard Clark wrote:
It was Lorentz that described time dilation (using the speed of light)
in 1887 and formalized in 1899, and it was Poincaré who introduced
this math in 1905, not Einstein.


It was Einstein who first recognized that the Lorentz
transforms actually applied to reality and were not
just another useful set of purely mathematical
transforms. If Lorentz and Poincare had recognized
that fact, they would have gotten credit for the
theory of relativity but guess who got the credit?
Hint: The guy who nailed down the speed of light as
an absolute in his relativity equations. Nowhere have
I ever read that the mathematicians, Lorentz or Poincare,
ever suspected that the speed of light in a vacuum was
a fixed absolute. That concept was left to a physicist.

he "nailed it down" in his equations


is an slur on Maxwell, Lamor, Lorentz, and Poincaré's contributions
that predate Einstein by decades.


No slur intended or implied so it must be a mistaken
inference on your part. You obviously jumped to a wrong
conclusion and do not understand what I meant by "nailed
it down". If everything is relative, then nothing is
fixed. By declaring the speed of light in a vacuum to be
a fixed absolute, Einstein nailed down the cornerstone
of his theory. Relativity needed a reference nailed down.
Einstein nailed down the speed of light as that reference.
In my context, "set it in concrete" would be synonym for
"nailed it down". I do believe the speed of light in a
vacuum is set in concrete within the theory of relativity.

You are walking around a vacant lot and find a rope. You
want to experiment with waves using the rope. You "nail
down" one end of the rope and apply energy at the other
end. Are you slurring the inventors and/or manufacturers
of the rope? Please explain how.
--
73, Cecil http://www.w5dxp.com

Richard Clark February 3rd 07 05:35 PM

Thread gone astray was Antennas led astray
 
On Sat, 03 Feb 2007 13:12:24 GMT, Cecil Moore
wrote:

-Sigh- Special relativity cowboy rope tricks snipped....

You are walking around a vacant lot and find a rope. You
want to experiment with waves using the rope.


No one expects the Spanish Inquisition! Whip your rope twice and you
are forgiven, whip your rope more and you are sinning.

Jimmie D February 4th 07 02:52 AM

Thread gone astray was Antennas led astray
 

"Cecil Moore" wrote in message
. net...
Richard Clark wrote:
The world waits in wonder at your assertion of Einstein's ability to
set the speed of light and time - especially when it had been
investigated and quantified by many earlier workers, notably Michelson
and Morely.


Please Google "relativity" and "Lorentz transforms"
for the technical facts as presented by Einstein.
--
73, Cecil http://www.w5dxp.com


Einstien contribution was that he made the connection between matter and
energy. The fact that the speed of light appeared to be constant regardless
of the observers reference was already fairly well established before
Einstien began his work. He just proposed a possible explanation



Christopher Cox February 5th 07 01:33 AM

The Awesome Razor
 

73 Yuri da BUm da father of Razors


QST April 1972

Yuri Blanarovich February 5th 07 03:11 AM

The Awesome Razor
 

"Christopher Cox" wrote in message
...

73 Yuri da BUm da father of Razors


QST April 1972


What about it?

BUm



Christopher Cox February 5th 07 01:31 PM

The Awesome Razor
 
Yuri Blanarovich wrote:
"Christopher Cox" wrote in message
...

73 Yuri da BUm da father of Razors


QST April 1972



What about it?

BUm



Apr-72 Fundamental Raser Principles Pg56

Whoop's swapped a 's' with the 'z'... :-)

I believe Wes had the right idea though.

Yuri Blanarovich February 5th 07 02:29 PM

The Awesome Razor
 

"Christopher Cox" wrote in message
...
Yuri Blanarovich wrote:
"Christopher Cox" wrote in message
...

73 Yuri da BUm da father of Razors

QST April 1972



What about it?

BUm


Apr-72 Fundamental Raser Principles Pg56

Whoop's swapped a 's' with the 'z'... :-)

I believe Wes had the right idea though.


...and "e" for "o" - seems that was April fool's take on Laser - Raser.

Are you challenging my fatherhood of Razors? :-)
Razor Beam applies to optimized Quad - Yagi elementary antenna design, not
to be confused with Overback's "Quagi" - where he replaced reflector and
driven element in a particular Yagi design.
I have series of designs from 3 el. quad to 10 el. Razors.

Razor was named after being so sharp, cutting through the pileups and
shaving the bands clean, jus' one chapter in my fooling with antennas.

73 Yuri, K3BU, VE3BMV
still da father of da Razor Beam



Christopher Cox February 5th 07 03:41 PM

The Awesome Razor
 

..and "e" for "o" - seems that was April fool's take on Laser - Raser.


It absolutely is!


Are you challenging my fatherhood of Razors? :-)


I absolutely was!

Razor Beam applies to optimized Quad - Yagi elementary antenna design, not
to be confused with Overback's "Quagi" - where he replaced reflector and
driven element in a particular Yagi design.
I have series of designs from 3 el. quad to 10 el. Razors.

Razor was named after being so sharp, cutting through the pileups and
shaving the bands clean, jus' one chapter in my fooling with antennas.


And there is/was my confusion. You were referring to a valid antenna
design where I thought you were joking around.

Sorry.

But being interested in quad endfire arrays, I will read of your work
with great interest.

Regards,

Chris

Yuri Blanarovich February 5th 07 08:41 PM

The Awesome Razor
 

Razor Beam applies to optimized Quad - Yagi elementary antenna design,
not
to be confused with Overback's "Quagi" - where he replaced reflector and
driven element in a particular Yagi design.
I have series of designs from 3 el. quad to 10 el. Razors.

Razor was named after being so sharp, cutting through the pileups and
shaving the bands clean, jus' one chapter in my fooling with antennas.


And there is/was my confusion. You were referring to a valid antenna
design where I thought you were joking around.

Sorry.

But being interested in quad endfire arrays, I will read of your work with
great interest.

Regards,

Chris


Hi Chris,

Based on my hardware 2m modeling, my and others conclusion is that going
over 5 elements, quad array does not provide more gain per boomlength than
Yagi.
This is why I tried to come up with design that would provide maximum gain
per boom length, 50 ohm impedance and clean pattern - Quad/Yagi combination.
My conclusion then was that one quad element before and after driven (cell)
element and rest should be Yagis.
Now I am playing with dual polarization designs, where quad elements are
only "dumb" enough to not know which polarization they are at. By switching
or phasing driven element one can take advantage of that property.
That, combined with new SDR and DSP radios is opening up whole new area.

73 Yuri, K3BU



art February 5th 07 11:28 PM

The Awesome Razor
 
snip
Yagi.
snip.
That, combined with new SDR and DSP radios is opening up whole new area.

73 Yuri, K3BU- Hide quoted text -

- Show quoted text -



What is this 'whole new area do you see opening up' have with respect
to antennas and how is it connected to polarization ?
Myself, I anticipate some movement to more compact forms of arrays to
meet WIFI trends , erther way antenna interest is sure to increase in
the
next decade.
Art


Yuri Blanarovich February 5th 07 11:48 PM

The Awesome Razor
 

"art" wrote in message
ups.com...
snip
Yagi.
snip.
That, combined with new SDR and DSP radios is opening up whole new area.

73 Yuri, K3BU- Hide quoted text -

- Show quoted text -



What is this 'whole new area do you see opening up' have with respect
to antennas and how is it connected to polarization ?


With two antennas and dual SDR receiver you can already swing the pattern
from the antennas in the software. Using dual polarization you can minimize
the efects of fading and take advantage of some noise canceling in DSP -
software. Even now you can see the signals before you can hear them.

Myself, I anticipate some movement to more compact forms of arrays to
meet WIFI trends , erther way antenna interest is sure to increase in
the
next decade.
Art


Good for you!

73 Yuri



Rick February 6th 07 12:08 AM

The Awesome Razor
 
On Mon, 5 Feb 2007 15:41:38 -0500, "Yuri Blanarovich"
wrote:


Razor Beam applies to optimized Quad - Yagi elementary antenna design,
not
to be confused with Overback's "Quagi" - where he replaced reflector and
driven element in a particular Yagi design.
I have series of designs from 3 el. quad to 10 el. Razors.

Razor was named after being so sharp, cutting through the pileups and
shaving the bands clean, jus' one chapter in my fooling with antennas.


And there is/was my confusion. You were referring to a valid antenna
design where I thought you were joking around.


Now I am playing with dual polarization designs, where quad elements are
only "dumb" enough to not know which polarization they are at.


Hey Yuri,
Will a Razor work better if it is looking out over an infinite salt marsh with
3000 miles of ocean on the horizon, or a sand-soil forested area? Just
curious. Assume 40 meters or maybe 80 meters and lots of height.

Rick K2XT

Yuri Blanarovich February 6th 07 01:52 AM

The Awesome Razor
 


Hey Yuri,
Will a Razor work better if it is looking out over an infinite salt marsh
with
3000 miles of ocean on the horizon, or a sand-soil forested area? Just
curious. Assume 40 meters or maybe 80 meters and lots of height.

Rick K2XT


Anything works better over salt marsh or water. Vertical polarization takes
more advantage of the "salty" effect.

73 Yuri



Michael Coslo February 8th 07 05:36 PM

Antennas led astray
 
Cecil Moore wrote:
Dave Oldridge wrote:
Nobody that I know of, but we're getting to the point where we can see
almost that far back.


Seems to me all we can see is back to the point where
things are moving away from our relative position at
less than the speed of light. Did you know that the
red shift is quantitized, i.e. not continuous, even
within the same galaxy?


All parts of any given galaxy are not moving toward or away from us at
the same speed, unless the galaxy is perfectly perpendicular to us.

Is your red-shift issue about the red shift itself, or about the
magnitude of the shift? And if "variable seconds" is the culprit, how
are blue shifted stars accommodated in your model?


- 73 de Mike KB3EIA -

Cecil Moore February 8th 07 07:17 PM

Antennas led astray
 
Michael Coslo wrote:
All parts of any given galaxy are not moving toward or away from us
at the same speed, unless the galaxy is perfectly perpendicular to us.


True, but consider that the red shift frequencies
are discontinuous, i.e. quantized.

Is your red-shift issue about the red shift itself, or about the
magnitude of the shift? And if "variable seconds" is the culprit, how
are blue shifted stars accommodated in your model?


My issue is that red-shifts are not necessarily
100% Doppler effects.
--
73, Cecil http://www.w5dxp.com

Michael Coslo February 8th 07 09:16 PM

Antennas led astray
 
Cecil Moore wrote:
Michael Coslo wrote:
All parts of any given galaxy are not moving toward or away from us at
the same speed, unless the galaxy is perfectly perpendicular to us.


True, but consider that the red shift frequencies
are discontinuous, i.e. quantized.

Is your red-shift issue about the red shift itself, or about the
magnitude of the shift? And if "variable seconds" is the culprit, how
are blue shifted stars accommodated in your model?


My issue is that red-shifts are not necessarily
100% Doppler effects.



Of course there is gravitational redshift too, but I don't think that is
what you are referring to.

I think you are trying to say that time is variable (forgive if I err)
This means that the speed of light is also variable if only by relation
to that variable time element

Doppler effect is readily observable at audio and RF wavelengths. It is
widely accepted that the effect continues at light wavelengths.

Any effects that alter Doppler at light wavelengths should also be
noticeable at to wavelengths. I have not heard of any such, have you?

This then says that we are not in the "fastest time" zone, because there
are celestial bodies that are blue shifting toward us, or perhaps
not,they are just in a different "time zone"? ;^)

BTW, I erred in my perpendicular statement above. I forgot about
transverse Doppler shift that we would indeed have in a galaxy at right
angles.

- 73 de Mike KB3EIA -

Cecil Moore February 8th 07 09:31 PM

Antennas led astray
 
Michael Coslo wrote:
Doppler effect is readily observable at audio and RF wavelengths. It is
widely accepted that the effect continues at light wavelengths.


The question is: Are all frequency shifts in the
universe caused by Doppler effects? I say no.
I say some frequency shifts are relativity effects.
--
73, Cecil http://www.w5dxp.com

Michael Coslo February 8th 07 09:44 PM

Antennas led astray
 
Cecil Moore wrote:
Michael Coslo wrote:
Doppler effect is readily observable at audio and RF wavelengths. It
is widely accepted that the effect continues at light wavelengths.


The question is: Are all frequency shifts in the
universe caused by Doppler effects? I say no.
I say some frequency shifts are relativity effects.


Which is the gravitational redshift. Or do you propose another type too?


- 73 de Mike KB3EIA -

[email protected] February 8th 07 09:45 PM

Antennas led astray
 
Cecil Moore wrote:
Michael Coslo wrote:
Doppler effect is readily observable at audio and RF wavelengths. It is
widely accepted that the effect continues at light wavelengths.


The question is: Are all frequency shifts in the
universe caused by Doppler effects? I say no.
I say some frequency shifts are relativity effects.
--
73, Cecil http://www.w5dxp.com


The doppler shift of EM frequency is a relativistic effect, so you got
that sorta right.

--
Jim Pennino

Remove .spam.sux to reply.

Jim Kelley February 8th 07 10:24 PM

Antennas led astray
 
Michael Coslo wrote:

Cecil Moore wrote:

Michael Coslo wrote:

All parts of any given galaxy are not moving toward or away from us
at the same speed, unless the galaxy is perfectly perpendicular to us.



True, but consider that the red shift frequencies
are discontinuous, i.e. quantized.

Is your red-shift issue about the red shift itself, or about the
magnitude of the shift? And if "variable seconds" is the culprit, how
are blue shifted stars accommodated in your model?



My issue is that red-shifts are not necessarily
100% Doppler effects.




Of course there is gravitational redshift too, but I don't think that is
what you are referring to.

I think you are trying to say that time is variable (forgive if I err)
This means that the speed of light is also variable if only by relation
to that variable time element

Doppler effect is readily observable at audio and RF wavelengths. It is
widely accepted that the effect continues at light wavelengths.

Any effects that alter Doppler at light wavelengths should also be
noticeable at to wavelengths. I have not heard of any such, have you?

This then says that we are not in the "fastest time" zone, because there
are celestial bodies that are blue shifting toward us, or perhaps
not,they are just in a different "time zone"? ;^)

BTW, I erred in my perpendicular statement above. I forgot about
transverse Doppler shift that we would indeed have in a galaxy at right
angles.

- 73 de Mike KB3EIA -


There is an interesting (hypothetical) effect - and maybe this is what
Cecil is talking about. Two systems; A and B, we're A. System B is
moving away from us at relativistic velocity. Sodium yellow light
from system B's street lights looks red from where we're standing in
system A. Lets say we can also measure the atomic transition
frequency of the sodium atoms in system B's street lights and discover
that it resonates at a lower frequency compared to our reference
frame. [Note that if the velocity between the two systems is indeed
relativistic, then visible light will be shifted down into the
infrared. Also note that if we could observe the diaphram of a car
horn as it approached us, we would see that its frequncy of
oscillation visually would be higher than its doppler shifted audible
frequency.] If we assume that sodium behaves the same way everywhere
in the universe (which we usually do) and it transitions at
universally the same frequency everywhere, measured with respect to
its own reference frame, then there must be a difference in the length
of the unit time between the two reference frames in order to explain
the apparent observed frequency difference. We usually assume the
Doppler effect is linear with velocity, but temporal effects are
assumed to increase very non-linearly as the speed of light is
approached. So at modest velocities the apparent shift would be all
doppler, but at relativistic velocities the temporal aspect would
become more significant. I believe this is one explanation for the
apparent 'acceleration' effect, where you look far enough out and
things appear to be accelerating away from us, not just moving away.

73, ac6xg



Jim Kelley February 8th 07 10:41 PM

Antennas led astray
 

Correction: The car horn diaphram would of course be oscillating at a
frequency lower than the audible frequency when the car is approaching.

Jim Kelley wrote:


There is an interesting (hypothetical) effect - and maybe this is what
Cecil is talking about. Two systems; A and B, we're A. System B is
moving away from us at relativistic velocity. Sodium yellow light from
system B's street lights looks red from where we're standing in system
A. Lets say we can also measure the atomic transition frequency of the
sodium atoms in system B's street lights and discover that it resonates
at a lower frequency compared to our reference frame. [Note that if the
velocity between the two systems is indeed relativistic, then visible
light will be shifted down into the infrared. Also note that if we
could observe the diaphram of a car horn as it approached us, we would
see that its frequncy of oscillation visually would be higher than its
doppler shifted audible frequency.] If we assume that sodium behaves
the same way everywhere in the universe (which we usually do) and it
transitions at universally the same frequency everywhere, measured with
respect to its own reference frame, then there must be a difference in
the length of the unit time between the two reference frames in order to
explain the apparent observed frequency difference. We usually assume
the Doppler effect is linear with velocity, but temporal effects are
assumed to increase very non-linearly as the speed of light is
approached. So at modest velocities the apparent shift would be all
doppler, but at relativistic velocities the temporal aspect would become
more significant. I believe this is one explanation for the apparent
'acceleration' effect, where you look far enough out and things appear
to be accelerating away from us, not just moving away.

73, ac6xg




Cecil Moore February 9th 07 12:38 AM

Antennas led astray
 
Michael Coslo wrote:
Cecil Moore wrote:
Michael Coslo wrote:
Doppler effect is readily observable at audio and RF wavelengths. It
is widely accepted that the effect continues at light wavelengths.


The question is: Are all frequency shifts in the
universe caused by Doppler effects? I say no.
I say some frequency shifts are relativity effects.


Which is the gravitational redshift. Or do you propose another type
too?


The "expanding" space between two galaxies could be
a relativity effect and the shorter second due to
relativity effects naturally results in a lower
measured frequency.
--
73, Cecil http://www.w5dxp.com

Cecil Moore February 9th 07 12:40 AM

Antennas led astray
 
wrote:
The doppler shift of EM frequency is a relativistic effect, so you got
that sorta right.


The doppler red shift is thought to be because
galaxies are receding from each other. If a
rope stretched between those galaxies doesn't
break with time, what would that imply about
the recession?
--
73, Cecil
http://www.w5dxp.com

Cecil Moore February 9th 07 12:51 AM

Antennas led astray
 
Jim Kelley wrote:
So at modest velocities the apparent shift would be all
doppler, but at relativistic velocities the temporal aspect would become
more significant. I believe this is one explanation for the apparent
'acceleration' effect, where you look far enough out and things appear
to be accelerating away from us, not just moving away.


What if we and everything around us are still traveling
near the speed of light compared to the center of the
Big Bang? What if our velocity compared to the center
of the Big Bang is actually decreasing. Decreasing
velocity implies decreasing mass, increasing standard
unit lengths, and decreasing standard units of time
all of which might fool our measurements of today.

The Big Bang may have happened 12.5 billion years ago
based on the length of our present seconds, but
measured using the center of the Big Bang as the time
frame reference, how long since the Big Bang?
--
73, Cecil http://www.w5dxp.com

Jim Kelley February 9th 07 01:47 AM

Antennas led astray
 


Cecil Moore wrote:
The Big Bang may have happened 12.5 billion years ago
based on the length of our present seconds, but
measured using the center of the Big Bang as the time
frame reference, how long since the Big Bang?


How about this: If the length of the unit time changed by a factor of
two then the age of the universe, using the new metric, would differ
from the old by a factor of two. Same amount of time, but a different
number of units of time.

73 ac6xg


[email protected] February 9th 07 02:35 AM

Antennas led astray
 
Cecil Moore wrote:
wrote:
The doppler shift of EM frequency is a relativistic effect, so you got
that sorta right.


The doppler red shift is thought to be because
galaxies are receding from each other. If a
rope stretched between those galaxies doesn't
break with time, what would that imply about
the recession?
--
73, Cecil
http://www.w5dxp.com

The sound of one hand clapping.

--
Jim Pennino

Remove .spam.sux to reply.

Cecil Moore February 9th 07 03:19 AM

Antennas led astray
 
Jim Kelley wrote:
How about this: If the length of the unit time changed by a factor of
two then the age of the universe, using the new metric, would differ
from the old by a factor of two. Same amount of time, but a different
number of units of time.


Because of the effects of gravity and velocity upon
time, the first "second" was probably many magnitudes
longer than our reference second of today. And not
only does the length of a time unit change over time,
it also changes with position.
--
73, Cecil http://www.w5dxp.com

Michael Coslo February 9th 07 01:14 PM

Antennas led astray
 
Jim Kelley wrote:
Michael Coslo wrote:

Cecil Moore wrote:

Michael Coslo wrote:

All parts of any given galaxy are not moving toward or away from us
at the same speed, unless the galaxy is perfectly perpendicular to us.


True, but consider that the red shift frequencies
are discontinuous, i.e. quantized.

Is your red-shift issue about the red shift itself, or about the
magnitude of the shift? And if "variable seconds" is the culprit,
how are blue shifted stars accommodated in your model?


My issue is that red-shifts are not necessarily
100% Doppler effects.




Of course there is gravitational redshift too, but I don't think that
is what you are referring to.

I think you are trying to say that time is variable (forgive if I err)
This means that the speed of light is also variable if only by
relation to that variable time element

Doppler effect is readily observable at audio and RF wavelengths. It
is widely accepted that the effect continues at light wavelengths.

Any effects that alter Doppler at light wavelengths should also be
noticeable at to wavelengths. I have not heard of any such, have you?

This then says that we are not in the "fastest time" zone, because
there are celestial bodies that are blue shifting toward us, or
perhaps not,they are just in a different "time zone"? ;^)

BTW, I erred in my perpendicular statement above. I forgot about
transverse Doppler shift that we would indeed have in a galaxy at
right angles.

- 73 de Mike KB3EIA -


There is an interesting (hypothetical) effect - and maybe this is what
Cecil is talking about. Two systems; A and B, we're A. System B is
moving away from us at relativistic velocity. Sodium yellow light from
system B's street lights looks red from where we're standing in system
A. Lets say we can also measure the atomic transition frequency of the
sodium atoms in system B's street lights and discover that it resonates
at a lower frequency compared to our reference frame. [Note that if the
velocity between the two systems is indeed relativistic, then visible
light will be shifted down into the infrared. Also note that if we
could observe the diaphram of a car horn as it approached us, we would
see that its frequncy of oscillation visually would be higher than its
doppler shifted audible frequency.]


Here I become confused. It sounds as if you are saying that the
oscillation frequency of the "object" would be higher than the
frequency than the Doppler shifted frequency on approach. That sounds
like the reverse of the Doppler effect.


If we assume that sodium behaves
the same way everywhere in the universe (which we usually do) and it
transitions at universally the same frequency everywhere, measured with
respect to its own reference frame, then there must be a difference in
the length of the unit time between the two reference frames in order to
explain the apparent observed frequency difference. We usually assume
the Doppler effect is linear with velocity, but temporal effects are
assumed to increase very non-linearly as the speed of light is
approached. So at modest velocities the apparent shift would be all
doppler, but at relativistic velocities the temporal aspect would become
more significant. I believe this is one explanation for the apparent
'acceleration' effect, where you look far enough out and things appear
to be accelerating away from us, not just moving away.


Possibly. Cecil will eventually let us know. I'm still not completely sure.

- 73 de Mike KB3EIA -

Michael Coslo February 9th 07 01:15 PM

Antennas led astray
 
Jim Kelley wrote:

Correction: The car horn diaphram would of course be oscillating at a
frequency lower than the audible frequency when the car is approaching.


Okay, Jim. Disregard my followup then.

- 73 de Mike KB3EIA -


Michael Coslo February 9th 07 04:21 PM

Antennas led astray
 
Cecil Moore wrote:
Michael Coslo wrote:
Cecil Moore wrote:
Michael Coslo wrote:
Doppler effect is readily observable at audio and RF wavelengths. It
is widely accepted that the effect continues at light wavelengths.

The question is: Are all frequency shifts in the
universe caused by Doppler effects? I say no.
I say some frequency shifts are relativity effects.


Which is the gravitational redshift. Or do you propose another type too?


The "expanding" space between two galaxies could be
a relativity effect and the shorter second due to
relativity effects naturally results in a lower
measured frequency.



Could be. My questions alway revolve around just what - or why - the
effect is. The great thing about Doppler is that it works on so many
scales. We should be able to perform experiments that will go a long way
toward determining if such an effect exists.

What I see however is that there are no great anomalies with the
present model. That doesn't make it right, but it does mean it pretty
much fits.

Relativity also works at speeds lower and more local than across the
universe, Astronauts and their craft who orbit the earth are "younger"
than they would have been if they stayed on Earth. We use accelerators
that act consistently with relativity. We probably should see some of
what you are thinking of.

- 73 de Mike KB3EIA -

Jim Kelley February 9th 07 06:29 PM

Antennas led astray
 
Cecil Moore wrote:

Because of the effects of gravity and velocity upon
time, the first "second" was probably many magnitudes
longer than our reference second of today.


Such effects would likely have been significant during the first
microsecond or so after the big bang. It was a very big bang, apparently.

73, ac6xg




Richard Clark February 9th 07 11:38 PM

Antennas led astray
 
On Fri, 09 Feb 2007 10:29:28 -0800, Jim Kelley
wrote:

Because of the effects of gravity and velocity upon
time, the first "second" was probably many magnitudes
longer than our reference second of today.


Such effects would likely have been significant during the first
microsecond or so after the big bang. It was a very big bang, apparently.


This discussion of "time" (something a human observer could only
appreciate in a current inertial frame) conjures up the conundrum an
amoeba might have in puzzling out whether to stir or shake a martini.

Bartender to the one-cell protoplasm:
"Vodka or Gin?"
Amoeba:
"Can you inform me as to the relativistic implications?"
Bartender:
"You can't bruise Vodka."

73's
Richard Clark, KB7QHC

Jim Kelley February 9th 07 11:41 PM

Antennas led astray
 


Richard Clark wrote:

This discussion of "time" (something a human observer could only
appreciate in a current inertial frame) conjures up the conundrum an
amoeba might have in puzzling out whether to stir or shake a martini.

Bartender to the one-cell protoplasm:
"Vodka or Gin?"
Amoeba:
"Can you inform me as to the relativistic implications?"
Bartender:
"You can't bruise Vodka."

73's
Richard Clark, KB7QHC


Personally, I liken it to debating whether or not the fairies on the
head of the pin are actually dancing.

73 (singular), ac6xg




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