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PSYCHOLOGY OF THE DOPPLER EFFECT



 
 
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  #1  
Old October 22nd 12, 07:03 AM posted to sci.astro
Pentcho Valev
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Default PSYCHOLOGY OF THE DOPPLER EFFECT

http://rockpile.phys.virginia.edu/mod04/mod34.pdf
"Now let's see what this does to the frequency of the light. We know that even without special relativity, observers moving at different velocities measure different frequencies. (This is the reason the pitch of an ambulance changes as it passes you it doesn't change if you're on the ambulance). This is called the Doppler shift, and for small relative velocity v it is easy to show that the frequency shifts from f to f(1+v/c) (it goes up heading toward you, down away from you). There are relativistic corrections, but these are negligible here."

So we have:

(A) f'/f = (c+v)/c

For all waves other than light waves, we have also:

(B) f'/f = c'/c

where c'=c+v is the speed of the waves relative to an observer moving with speed v towards the wave source.

For light waves (A) is valid while (B) never emerges in the thoughts of Einsteinians:

http://www.liferesearchuniversal.com/1984-17
Crimestop means the faculty of stopping short, as though by instinct, at the threshold of any dangerous thought. It includes the power of not grasping analogies, of failing to perceive logical errors, of misunderstanding the simplest arguments if they are inimical to Ingsoc, and of being bored or repelled by any train of thought which is capable of leading in a heretical direction. Crimestop, in short, means protective stupidity."

See more he

http://fqxi.org/data/essay-contest-f...equency_Im.pdf
Shift in Frequency Implies Shift in Speed of Light

Pentcho Valev
  #2  
Old October 22nd 12, 07:35 AM posted to sci.astro
Lord Androcles, Zeroth Earl of Medway[_3_]
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Default PSYCHOLOGY OF THE DOPPLER EFFECT

"Pentcho Valev" wrote in message ...
http://rockpile.phys.virginia.edu/mod04/mod34.pdf

So we have:

(A) f'/f = (c+v)/c
================================================== ====
If you are chasing the ambulance with velocity u then
f’/f = (c+v)/(c+u)
where v and u are relative to air.
sonic boom when u = –c, division by zero.
Look, 1 = c/c, Valev.
If you insist on writing 1+v/c instead of c/c + v/c = (c+v)/c then you’ll
never consider u at all, psychologically.
Sonic Boom, Valev. wavelength = 0, frequency infinite. Sound arrives
as the air ambulance arrives. Experimentally verified.
Air is a medium for sound, there is no medium for light.
FOR PSYCHOLOGY’S SAKE CHANGE 1+V/C to (C+V)/C !!!!
-- This message is brought to you from the keyboard of
Lord Androcles, Zeroth Earl of Medway
  #3  
Old October 22nd 12, 06:06 PM posted to sci.astro
Pentcho Valev
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Default PSYCHOLOGY OF THE DOPPLER EFFECT

http://www.cmmp.ucl.ac.uk/~ahh/teach...24n/lect19.pdf
Tony Harker, University College London: "The Doppler Effect: Moving sources and receivers. The phenomena which occur when a source of sound is in motion are well known. The example which is usually cited is the change in pitch of the engine of a moving vehicle as it approaches. In our treatment we shall not specify the type of wave motion involved, and our results will be applicable to sound or to light. (...) Now suppose that the observer is moving with a velocity Vo away from the source. (...) If the observer moves with a speed Vo away from the source (...), then in a time t the number of waves which reach the observer are those in a distance (c-Vo)t, so the number of waves observed is (c-Vo)t/lambda, giving an observed frequency f'=f(1-Vo/c) when the observer is moving away from the source at a speed Vo."

If in a time t the number of waves which reach the observer are those in a distance (c-Vo)t, then the speed of the light waves relative to the observer is c'=c-Vo, in violation of special relativity. It takes constant and painful exercise in crimestop to maintain the belief that c'=c-Vo is wrong and c'=c (required by special relativity) gloriously true:

http://www.liferesearchuniversal.com/1984-22
"He set to work to exercise himself in crimestop. He presented himself with propositions - "the Party says the earth is flat", "the party says that ice is heavier than water" - and trained himself in not seeing or not understanding the arguments that contradicted them. It was not easy. It needed great powers of reasoning and improvisation. The arithmetical problems raised, for instance, by such a statement as "two and two make five" were beyond his intellectual grasp. It needed also a sort of athleticism of mind, an ability at one moment to make the most delicate use of logic and at the next to be unconscious of the crudest logical errors. Stupidity was as necessary as intelligence, and as difficult to attain."

Pentcho Valev
  #4  
Old October 23rd 12, 12:41 AM posted to sci.astro,sci.physics,sci.physics.relativity
Lord Androcles, Zeroth Earl of Medway[_3_]
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Default PSYCHOLOGY OF THE DOPPLER EFFECT

"Pentcho Valev" wrote in message ...
http://www.cmmp.ucl.ac.uk/~ahh/teach...24n/lect19.pdf
Tony Harker, University College London:
======================================
So who the **** is the ignoramus Tony Harker?
-- This message is brought to you from the keyboard of
Lord Androcles, Zeroth Earl of Medway
  #5  
Old October 24th 12, 02:53 PM posted to sci.astro
Pentcho Valev
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Default PSYCHOLOGY OF THE DOPPLER EFFECT

http://physics.bu.edu/~redner/211-sp...9_doppler.html
Professor Sidney Redner: "The Doppler effect is the shift in frequency of a wave that occurs when the wave source, or the detector of the wave, is moving. Applications of the Doppler effect range from medical tests using ultrasound to radar detectors and astronomy (with electromagnetic waves). (...) We will focus on sound waves in describing the Doppler effect, but it works for other waves too. (...) Let's say you, the observer, now move toward the source with velocity vO. You encounter more waves per unit time than you did before. Relative to you, the waves travel at a higher speed: v'=v+vO.. The frequency of the waves you detect is higher, and is given by: f'=v'/(lambda)=(v+vO)/(lambda)."

http://www.usna.edu/Users/physics/mu...plerEffect.pdf
Carl Mungan: "Consider the case where the observer moves toward the source. In this case, the observer is rushing head-long into the wavefronts, so that we expect v'v. In fact, the wave speed is simply increased by the observer speed, as we can see by jumping into the observer's frame of reference. Thus, v'=v+v_o=v(1+v_o/v). Finally, the frequency must increase by exactly the same factor as the wave speed increased, in order to ensure that L'=L - v'/f'=v/f. Putting everything together, we thus have: OBSERVER MOVING TOWARD SOURCE: L'=L; f'=f(1+v_o/v); v'=v+v_o."

http://www.physics-inthinking.co.uk/waves/doppler.htm
"Lesson 50: Doppler effect in sound and light (...) Understand why the velocity of a wave will be greater when an observer moves towards the source."

Who should understand this? Does it violate special relativity? Einsteinians?

Einsteinians: "No! Help! Help! Divine Einstein! Yes we all believe in relativity, relativity, relativity! Let me die! Let me die! And how can I possibly be consoled? In this cruel fate? In this great suffering? Let me die!" http://www.youtube.com/watch?v=Q99q_...eature=related

Pentcho Valev
  #6  
Old October 26th 12, 11:44 AM posted to sci.astro
Pentcho Valev
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Posts: 8,078
Default PSYCHOLOGY OF THE DOPPLER EFFECT

For sound waves, it is obvious that the motion of the observer does not change the wavelength of the incident waves and therefore their speed relative to the observer varies with the speed of the observer:

http://faculty.washington.edu/wilkes...erference..pdf
"Sound waves have speed c, and f and L are related by c=Lf. For an observer moving relative to medium with speed u, apparent propagation speed c' will be different: c'=c±u. Wavelength cannot change - it's a constant length in the medium, and same length in moving coordinate system (motion does not change lengths). Observed frequency has to change, to match apparent speed and fixed wavelength: f'=c'/L."

For light waves, the fact that the motion of the observer cannot change the wavelength of the incident light is also obvious - it is always used, explicitly or implicitly, in the derivation of the Doppler frequency shift (moving observer). But this simple fact violates special relativity of course. Intelligent Einsteinians know that and always take the same (silent) position whenever the issue comes up:

http://skipper810.files.wordpress.co...ria1.png?w=640

Only extremely intelligent Einsteinians, "the subtlest practitioners of doublethink", can blatantly deny the obvious fact of wavelength independence of the motion of the observer:

http://www.pitt.edu/~jdnorton/teachi...ang/index.html
John Norton: "Here's a light wave and an observer. If the observer were to hurry towards the source of the light, the observer would now pass wavecrests more frequently than the resting observer. That would mean that moving observer would find the frequency of the light to have increased (AND CORRESPONDINGLY FOR THE WAVELENGTH - THE DISTANCE BETWEEN CRESTS - TO HAVE DECREASED)."

http://www.liferesearchuniversal.com/1984-17
"Doublethink means the power of holding two contradictory beliefs in one's mind simultaneously, and accepting both of them. The Party intellectual knows in which direction his memories must be altered; he therefore knows that he is playing tricks with reality; but by the exercise of doublethink he also satisfies himself that reality is not violated. The process has to be conscious, or it would not be carried out with sufficient precision, but it also has to be unconscious, or it would bring with it a feeling of falsity and hence of guilt. Doublethink lies at the very heart of Ingsoc, since the essential act of the Party is to use conscious deception while retaining the firmness of purpose that goes with complete honesty. To tell deliberate lies while genuinely believing in them, to forget any fact that has become inconvenient, and then, when it becomes necessary again, to draw it back from oblivion for just so long as it is needed, to deny the existence of objective reality and all the while to take account of the reality which one denies - all this is indispensably necessary. (...) It need hardly be said that the subtlest practitioners of doublethink are those who invented doublethink and know that it is a vast system of mental cheating. In our society, those who have the best knowledge of what is happening are also those who are furthest from seeing the world as it is. In general, the greater the understanding, the greater the delusion ; the more intelligent, the less sane."

Pentcho Valev
  #7  
Old November 28th 12, 11:44 AM posted to sci.astro
Pentcho Valev
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Default PSYCHOLOGY OF THE DOPPLER EFFECT

http://www.ic.sunysb.edu/Class/phy14...41:lectures:30
"A doppler effect also occurs when an observer moves towards a source, but here the wavelength does not change, instead it is the effective velocity that changes and leads to an apparent change in the frequency of the SOUND."

The substitution of "LIGHT" for "SOUND" is obviously fatal for special relativity - the speed of the light waves relative to the observer varies with the speed of the observer:

"A doppler effect also occurs when an observer moves towards a source, but here the wavelength does not change, instead it is the effective velocity that changes and leads to an apparent change in the frequency of the LIGHT."

How do Einsteinians deal with the danger? It is universally taught that, for sound waves, the frequency as measured by the moving observer is:

f' = (c+v)/L = c'/L

where c is the speed of the waves relative to the stationary observer, v is the speed with which the observer moves towards the source, c' is the speed of the waves relative to moving observer, L is the invariable wavelength. Einsteinians readily apply the first equation to light waves:

f' = (c+v)/L = ...

but then suddenly stop, as though by instinct:

http://www.liferesearchuniversal.com/1984-17
George Orwell: "Crimestop means the faculty of stopping short, as though by instinct, at the threshold of any dangerous thought. It includes the power of not grasping analogies, of failing to perceive logical errors, of misunderstanding the simplest arguments if they are inimical to Ingsoc, and of being bored or repelled by any train of thought which is capable of leading in a heretical direction. Crimestop, in short, means protective stupidity."

If it were not for crimestop, Einsteinians would have to explicitly reject the analogy with sound waves and declare that light waves obey the following equations:

f' = (c+v)/L = c/L'

where L'=cL/(c+v) is the varying wavelength which varies so as to guarantee both the constancy of the speed of light and the salaries of Einsteinians. However L'=cL/(c+v) is too silly and therefore dangerous. Crimestop is obligatory in such cases:

f' = (c+v)/L = Divine Einstein, yes we all believe in relativity, relativity, relativity.

Pentcho Valev
 




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