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BINGO THE EINSTEINIANO TEACHES DOPPLER EFFECT



 
 
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  #1  
Old April 12th 13, 12:47 PM posted to sci.astro
Pentcho Valev
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Posts: 7,495
Default BINGO THE EINSTEINIANO TEACHES DOPPLER EFFECT

Bingo the Einsteiniano is the name of any person in Divine Albert's world who has undergone special brainwashing in Einsteiniana, brainwashing very similar to the one undergone by Bingo the Clowno:

http://www.youtube.com/watch?v=1OBUj-LBsVo
Bingo the Clowno

Once brainwashing is over Bingo's career is accelerating - he often becomes professor. Here is professor Einsteiniano teaching the Doppler effect:

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."

Bingo knows that the Doppler formula f'=c'/L is valid for both sound and light waves but he would not mention the word "light" here. The reason is that Bingo has used the extremely dangerous formula c'=c±u - in such cases any thought concerning light waves is precluded:

http://ebooks.adelaide.edu.au/o/orwe...hapter2.9.html
"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."

Sometimes Bingo is careless - his teaching leaves the impression that, for any waves, the shift in frequency is due to a shift in the speed of the waves (relative to the observer), in violation of special relativity:

http://a-levelphysicstutor.com/wav-doppler.php
"vO is the velocity of an observer moving towards the source. This velocity is independent of the motion of the source. Hence, the velocity of waves relative to the observer is c + vO. (...) The motion of an observer does not alter the wavelength. The increase in frequency is a result of the observer encountering more wavelengths in a given time."

http://www.donbosco-tournai.be/expo-...fetDoppler.pdf
"La variation de la fréquence observée lorsqu'il y a mouvement relatif entre la source et l'observateur est appelée effet Doppler. (...) 6. Source immobile - Observateur en mouvement: La distance entre les crêtes, la longueur d'onde lambda ne change pas. Mais la vitesse des crêtes par rapport à l'observateur change !"

http://www.radartutorial.eu/11.coherent/co06.fr.html
"L'effet Doppler est le décalage de fréquence d'une onde acoustique ou électromagnétique entre la mesure à l'émission et la mesure à la réception lorsque la distance entre l'émetteur et le récepteur varie au cours du temps. (...) Pour comprendre ce phénomène, il s'agit de penser à une onde à une fréquence donnée qui est émise vers un observateur en mouvement, ou vis-versa. LA LONGUEUR D'ONDE DU SIGNAL EST CONSTANTE mais si l'observateur se rapproche de la source, il se déplace vers les fronts d'ondes successifs et perçoit donc plus d'ondes par seconde que s'il était resté stationnaire, donc une augmentation de la fréquence. De la même manière, s'il s'éloigne de la source, les fronts d'onde l'atteindront avec un retard qui dépend de sa vitesse d'éloignement, donc une diminution de la fréquence. Dans le cas sonore, cela se traduit par un son plus aigu lors d'un rapprochement de la source et un son plus grave en s'éloignant de celle-ci. Dans le domaine de la lumière visible, on parle de décalage vers le bleu pour un rapprochement et vers le rouge dans le cas d'éloignement en se référant au spectre lumineux. La même chose s'applique à toutes les gammes d'ondes électromagnétiques dont les ondes utilisées par les radars."

http://physics.bu.edu/~redner/211-sp...9_doppler.html
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."

Pentcho Valev
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  #2  
Old April 12th 13, 02:31 PM posted to sci.astro
Pentcho Valev
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Posts: 7,495
Default BINGO THE EINSTEINIANO TEACHES DOPPLER EFFECT

Bingo the Einsteiniano's final exam (before starting to prepare himself for the professorship). Bingo is shown an observer moving away from the light source: both the frequency and the speed of the waves relative to the observer decrease:

http://www.youtube.com/watch?feature...&v=EVzUyE2oD1w
"Fermilab physicist, Dr. Ricardo Eusebi, discusses the Doppler effect..."

Bingo should see the frequency decrease but should not see any decrease in the speed of the waves relative to the moving observer. Bingo is watching for a few seconds then turns to Einsteiniana's jury and ecstatically declares:

"I clearly see the frequency decrease but the speed of the light waves relative to the observer is unchanged, I do not see any change, the speed of light never changes, Divine Albert said so, yes we all believe in relativity, relativity, relativity."

The exam is success. Bingo and the jury (they are now indistinguishable from one another) sing and dance:

http://www.youtube.com/watch?v=vEyfr10lgNw
That's the way ahah ahah we like it ahah ahah!

Pentcho Valev
  #3  
Old April 12th 13, 05:48 PM posted to sci.astro
Pentcho Valev
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Posts: 7,495
Default BINGO THE EINSTEINIANO TEACHES DOPPLER EFFECT

http://www.people.fas.harvard.edu/~djmorin/chap11.pdf
Bingo the Einsteiniano: "Let's now start from scratch and see what the theory of Special Relativity is all about. We'll take the route that Einstein took and use two postulates as the basis of the theory. We'll start with the speed-of-light postulate: The speed of light has the same value in any inertial frame. I don't claim that this statement is obvious, or even believable. But I do claim that it's easy to understand what the statement says (even if you think it's too silly to be true). It says the following. Consider a train moving along the ground at constant velocity. Someone on the train shines a light from one point on the train to another. Let the speed of the light with respect to the train be c (~3.10^8m/s). Then the above postulate says that a person on the ground also sees the light move at speed c. This is a rather bizarre statement."

It is not bizarre, it is absurd. The person on the train sees (measures):

speed of light c ; frequency f=c/L ; wavelength L.

The person on the ground sees either:

speed of light c+v ; frequency f'=(c+v)/L ; wavelength L (Newton's emission theory);

or:

speed of light c ; frequency f'=(c+v)/L ; wavelength L'=cL(c+v) (special relativity).

Clearly the emission theory's prediction is physically reasonable while the special relativity's prediction that "the speed of light has the same value in any inertial frame" is a fudge - it absurdly (and implicitly in the relativistic literature) presupposes that the wavelength is measured to be L on the train but L'=cL(c+v) on the ground. That is, if Bingo wants the speed of light to have the same value in any inertial frame, the wavelength should change in the following idiotic way:

http://lewebpedagogique.com/physique...8doppler_p.gif

See more he

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

Pentcho Valev
  #4  
Old April 12th 13, 10:06 PM posted to sci.astro
Pentcho Valev
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Posts: 7,495
Default BINGO THE EINSTEINIANO TEACHES 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."

Question: Can "sound" be replaced with "light"?

Bingo the Einsteiniano: Why not? The same formula for the frequency shift, f'=f(1+v/c), will be obtained. Wait wait... "it is the effective velocity that changes"... No! Help! Help! Divine Einstein! Yes we all believe in relativity, relativity, relativity! The effective velocity of light never changes! Of sound - yes, of light - never! Divine Albert said so!

Question: For sound, the effective velocity changes and "leads to an apparent change in the frequency". For light, the effective velocity does not change but then what "leads to an apparent change in the frequency"?

Bingo the Einsteiniano: It is the wavelength that changes and leads to an apparent change in the frequency of the light.

Question: So the motion of the obsever cannot change the wavelength of sound but can change the wavelength of light?

Bingo the Einsteiniano: I think the motion of the observer changes the wavelength of both sound and light, in the following way:

http://lewebpedagogique.com/physique...8doppler_p.gif

Pentcho Valev
  #5  
Old April 13th 13, 07:17 AM posted to sci.astro
Pentcho Valev
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Posts: 7,495
Default BINGO THE EINSTEINIANO TEACHES DOPPLER EFFECT

Antirelativist: As the observer starts moving towards the source of the light waves with speed v, the speed of the waves relative to him shifts from c to c'=c+v.

Bingo the Einsteiniano: No! The speed of the light waves relative to the observer remains unchanged, Divine Einstein, yes we all believe in relativity, relativity, relativity. Click on the "Observer Approaches" button in the video below. What do you see? As the observer starts moving towards the source of the light waves with speed v, the wavelength shrinks - it shifts from L to L'=cL/(c+v). This is exactly the shrinkage needed for the speed of light to remain constant, Divine Einstein, yes we all believe in relativity, relativity, relativity. The frequency increases, the wavelength decreases, and so their product, the speed of light, remains constant, Divine Einstein, yes we all believe in relativity, relativity, relativity.

http://highered.mcgraw-hill.com/olcw...oppler_Nav.swf
"EXERCISES: 2. Now click on the "Observer Approaches" button. The ship will start flying towards the source. What is the wavelength of the waves now, as the ship approaches the source? Does the frequency increase or decrease? SOLUTIONS: 2. The wavelength shrinks so that about three waves now fit within the graph. (...) The frequency increases."

Antirelativist: But this is absurd! The motion of the observer cannot change the wavelength!

Bingo the Einsteiniano: In Divine Albert's world the motion of the observer CAN change the wavelength:

http://lewebpedagogique.com/physique...8doppler_p.gif

Pentcho Valev
  #6  
Old April 21st 13, 06:56 PM posted to sci.astro
Pentcho Valev
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Posts: 7,495
Default BINGO THE EINSTEINIANO TEACHES DOPPLER EFFECT

http://phys.org/news200044818.html
Bingo the Einsteiniano: "The Doppler effect, or Doppler shift, describes the changes in frequency of any kind of sound or light wave produced by a moving source with respect to an observer. Waves emitted by an object traveling toward an observer get compressed — prompting a higher frequency — as the source approaches the observer. In contrast, waves emitted by a source traveling away from an observer get stretched out."

For SOUND waves, when the observer starts moving, the waves get neither compressed nor stretched out - rather, the speed of the waves relative to the observer shifts from c to c'=c±u:

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."

How about LIGHT waves? Bingo? The analogy with sound waves still holds? If the observer starts moving towards the light source with speed v, does the speed of the waves relative to him shift from c to c'=c+v? No? Why, Bingo? The motion of the observer does not compress or stretch out sound waves but does compress or stretch out light waves? But, Bingo, the following video does not show anything like that - rather, it clearly shows that the speed of the light waves relative to the observer varies with the speed of the observer:

http://www.youtube.com/watch?feature...&v=EVzUyE2oD1w

Did you see the video, Bingo? Yes? So you saw how the speed of the light waves (relative to the observer) decreased as the observer started moving away from the light source? No? Why are you lying so blatantly, Bingo? That's the way ahah ahah you like it, ahah ahah?

http://www.youtube.com/watch?v=vEyfr10lgNw

Pentcho Valev
 




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