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Faster-than-light particles repeat speed despite tweaks
PD wrote in
: [...] Actually, they did change something. The pulses are now much narrower, so that the chief complaint -- pulse-shape matching -- can be ruled out as a systematic error. Which is why I take this result much more seriously now, and hope it can be replicated by an independent group. There's a Nobel in the works should this pan out, and hopefully a new assault on relativity that'll let us break the light barrier. |
#22
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Faster-than-light particles repeat speed despite tweaks
On 24/11/2011 9:03 PM, eric gisse wrote:
wrote in : [...] Actually, they did change something. The pulses are now much narrower, so that the chief complaint -- pulse-shape matching -- can be ruled out as a systematic error. Which is why I take this result much more seriously now, and hope it can be replicated by an independent group. There's a Nobel in the works should this pan out, and hopefully a new assault on relativity that'll let us break the light barrier. Since it hasn't really been replicated at any other neutrino detection locations, my assumption is that this is a measurement error, perhaps caused by the geologic instability in the region. Perhaps a kink in the tectonic plates that created a closer than expected distance between the source and target. Yousuf Khan |
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Faster-than-light particles repeat speed despite tweaks
On Nov 20, 8:40*pm, dlzc wrote:
Dear Yousuf Khan: On Nov 20, 7:07*am, Yousuf Khan wrote: On 19/11/2011 7:59 PM, dlzc wrote: On Nov 19, 4:08 am, Yousuf *wrote: On 18/11/2011 4:21 PM, dlzc wrote: ... But they never took care of the possible 65ns timing error, for the fact the two sets of detectors are many miles apart, and they did not discern between gamma photons created in spallation processes, and those form the original event. Still so not news... I'm not sure what you're getting at here. What difference do gamma rays make here? The race is between neutrinos that were created in the target event, and propagated to the detector site... and gamma photons passing through solid rock. Ah! You have a misconception here. There is no direct head-to-head race here, it's all just timed runs. Gamma rays cannot make it more than a few feet through the Earth before they are stopped; gamma rays cannot even make it through Earth's atmosphere. So no actual light beam is racing against the neutrino beam. Early bad press I guess. *Sorry. Instead, they are just measuring the neutrino beam speed against a hypothetical light beam -- which is obviously travelling at the speed of light. That's why they are paying so much attention to GPS accuracy and atomic clock synchronization. In the absence of actual light beams that can go through the Earth, they are measuring it against light's calculated arrival times. I wonder what they are using to calibrate their neutrino detector? They don't really detect neutrinos, they detect Cerenkov radiation from neutrino interactions that liberate charged particles. *Seems like others, with their calibrations, see no issues with arrival times. Are you saying that neutrinos are also emitted within spallation events beside the gamma rays? No. *I am saying the gammas detected may not have been generated in the same collision back at the source, but a daughter products of gammas interacting with intervening rock. Where is the spallation taking place? Scattering in rock. Well, obviously now you know that we're not talking about an actual light beam, but a hypothetical one, so this is now irrelevant. I suspect that if they could drill through all of this rock and open up a dead straight hole through which actual light can travel, alongside the neutrino beam, they will find that they have identical arrival times. There is an inaccuracy in their measurement of either time or distance that they haven't figured out yet. My bet is on distance. Mine is on calibration of their detectors. Anyways, my favored theory is still that this is an underground geological anomaly caused by the Aquila Earthquake. It's simple, and it's mundane compared to all of the other theories out there. And doesn't explain that the data was obtained over a two year period, not just at the starting point. *They are obtaining current GPS locations for things, I believe. The GPS signal, like other forms of light, cannot penetrate all of the way towards the underground mineshaft cavern where the neutrino detector is actually located. They claim it does. *They claim they have current data on that. So the GPS reading is done at the surface near the mouth of the cavern entrance, and then the underground neutrino detector position is estimated down nearly 1 mile underground. I'm saying that there is plenty of room for error at this stage because the GPS measurement is not taken at the actual neutrino detector but a mile away, at the entrance to the neutrino detector. Especially in an earthquake zone like this region, a very slight positional change at the surface could translate into a much more substantial positional change 1 mile down, since we can't actually measure with GPS down there. I think one way to resolve this issue might be to take a very accurate submarine inertial navigation system and measure from the cavern entrance to the neutrino detector chamber. Maybe. *But I figure this foofaraw will be good for helping Italy balance its budget. David A. Smith Thank you. You said something that I knew, but the way you said it invoked an angle on the neutrino thing that I also knew, but hadn't really distilled: you said " I wonder what they are using to calibrate their neutrino detector? They don't really detect neutrinos, they detect Cerenkov radiation from neutrino interactions that liberate charged particles" I heard "Neutrinos liberate charge." Thank you. john |
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Faster-than-light particles repeat speed despite tweaks
"Yousuf Khan" wrote in message ... On 24/11/2011 9:03 PM, eric gisse wrote: wrote in : [...] Actually, they did change something. The pulses are now much narrower, so that the chief complaint -- pulse-shape matching -- can be ruled out as a systematic error. Which is why I take this result much more seriously now, and hope it can be replicated by an independent group. There's a Nobel in the works should this pan out, and hopefully a new assault on relativity that'll let us break the light barrier. Since it hasn't really been replicated at any other neutrino detection locations, my assumption is that this is a measurement error, perhaps caused by the geologic instability in the region. Perhaps a kink in the tectonic plates that created a closer than expected distance between the source and target. Yousuf Khan =================== The odds are better for shorter paths existing unrecognized than for faster than light travel....a straighter length in curvature neutrinos can travel and light can't, or there being different shapes to space and time (though light would probably take to it just as well as neutrinos resulting in light itself being detected to travel faster or slower than c as far as observation and other detection were concerned). The ramifications of differing shorter and longer paths through space and time are just as great though, maybe greater, than finding out neutrinos could travel faster than light. Remember that lengths and distances, and thus *position* and positioning, regarding space and time are just as flexibly relative as *velocity*. Curvature can translate to a (one direction or another) ballooning of space and time. Space, too, is differential, is flexible, is even manipulative. But space being found out to be such an exact equal of time -- rather than simply being subjectively descriptive of an objective time, being found out to be actually 1:1 with time, must literally frighten so many mentally incapacitated physicists almost to death....turn their mental backbones to jelly and make them **** all over themselves (because no matter if even their lives depended on it, one-dimensional minds and thinkers literally can't see, literally can't conceive of, such a multi-dimensional thing in their mind's eyes, much less handle it). To go to two dimensions, and two dimensional thinking, is a leap much greater than the many think it is. To go on to three or more dimensions, and especially three or more dimensional thought, is to practically reach infinitely beyond one dimensionality. To have the case be faster than light travel is to have it be 1-dimensional (making things so much easier on physicists). To realize the case to be shorter pathing means having to go multi-dimensional in many more ways than one (making things so damned much harder on physicists). GLB ================= |
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Faster-than-light particles repeat speed despite tweaks
Yousuf Khan wrote in
: On 24/11/2011 9:03 PM, eric gisse wrote: wrote in news:af8c6d1d-3b68-44f3-bcbf-09bc3752c9a7 @d17g2000yql.googlegroups.com : [...] Actually, they did change something. The pulses are now much narrower, so that the chief complaint -- pulse-shape matching -- can be ruled out as a systematic error. Which is why I take this result much more seriously now, and hope it can be replicated by an independent group. There's a Nobel in the works should this pan out, and hopefully a new assault on relativity that'll let us break the light barrier. Since it hasn't really been replicated at any other neutrino detection locations, my assumption is that this is a measurement error, perhaps caused by the geologic instability in the region. Perhaps a kink in the tectonic plates that created a closer than expected distance between the source and target. Yousuf Khan Since my favored explanation was the bunching of the pulses being incorrectly characterized but with the measurement persisting, it would have to be some sort of systematic error like you mention or something else like new physics. I really doubt a systematic error of a hundred feet or so in the geodesy survived the initial survey much less the increased scrutiny after publication. |
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Faster-than-light particles repeat speed despite tweaks
On 27/11/2011 6:58 PM, eric gisse wrote:
Yousuf wrote in : On 24/11/2011 9:03 PM, eric gisse wrote: There's a Nobel in the works should this pan out, and hopefully a new assault on relativity that'll let us break the light barrier. Since it hasn't really been replicated at any other neutrino detection locations, my assumption is that this is a measurement error, perhaps caused by the geologic instability in the region. Perhaps a kink in the tectonic plates that created a closer than expected distance between the source and target. Yousuf Khan Since my favored explanation was the bunching of the pulses being incorrectly characterized but with the measurement persisting, it would have to be some sort of systematic error like you mention or something else like new physics. I really doubt a systematic error of a hundred feet or so in the geodesy survived the initial survey much less the increased scrutiny after publication. I'd say an underground geological displacement has much more likelihood of being correct than new physics. I say where there's smoke there's fire, and we know that this area experienced a very well known earthquake back in 2009. I guess in this case, that's more like: where there's fire, there's smoke. The earthquake being the fire, and the land displacement being the smoke. A 60-foot/18m displacement doesn't have to be all done on the spot locally, so a measurement locally may show little or no displacement relative to other nearby measurement points. It could be an accumulation of tectonic displacements from the source to the target, which is 700km afterall. Little crustal plates piling into each other underground over the 700km length of track could add upto the 60 ft. I think we'll know if my theory is right when the area experiences the next major earthquake and it might either increase or decrease the underground displacement somewhat. Yousuf Khan |
#27
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Faster-than-light particles repeat speed despite tweaks
In sci.physics Yousuf Khan wrote:
On 27/11/2011 6:58 PM, eric gisse wrote: Yousuf wrote in : On 24/11/2011 9:03 PM, eric gisse wrote: There's a Nobel in the works should this pan out, and hopefully a new assault on relativity that'll let us break the light barrier. Since it hasn't really been replicated at any other neutrino detection locations, my assumption is that this is a measurement error, perhaps caused by the geologic instability in the region. Perhaps a kink in the tectonic plates that created a closer than expected distance between the source and target. Yousuf Khan Since my favored explanation was the bunching of the pulses being incorrectly characterized but with the measurement persisting, it would have to be some sort of systematic error like you mention or something else like new physics. I really doubt a systematic error of a hundred feet or so in the geodesy survived the initial survey much less the increased scrutiny after publication. I'd say an underground geological displacement has much more likelihood of being correct than new physics. I say where there's smoke there's fire, and we know that this area experienced a very well known earthquake back in 2009. I guess in this case, that's more like: where there's fire, there's smoke. The earthquake being the fire, and the land displacement being the smoke. A 60-foot/18m displacement doesn't have to be all done on the spot locally, so a measurement locally may show little or no displacement relative to other nearby measurement points. It could be an accumulation of tectonic displacements from the source to the target, which is 700km afterall. Little crustal plates piling into each other underground over the 700km length of track could add upto the 60 ft. I think we'll know if my theory is right when the area experiences the next major earthquake and it might either increase or decrease the underground displacement somewhat. Yousuf Khan The two positions are monitored constantly using GPS and is so accurate they have seen the (minor) effects of earthquakes. The subject of the distance measurement has been beaten to death and is obviously NOT the source of error. -- Jim Pennino Remove .spam.sux to reply. |
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