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#3540 by RotoSequence on 18 Apr, 2017 18:09
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http://lhcb-public.web.cern.ch/lhcb-public/Welcome.html#RKstarQuote
18 April 2017: Lepton universality test probes physics beyond the Standard Model.
LHCb finds new hints of possible deviations from the Standard Model.
...The B0→K*0μ+μ- and B0→K*0e+e- decay rates could be affected by the presence of so-called heavy “virtual” BSM particles, which couple differently to electrons and muons than the gauge bosons, and therefore could sizeably increase or decrease the rate of the K*0μ+μ- and K*0e+e- final states, resulting in a deviation of RK*0 from the SM prediction.
Hmmmm...
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#3541 by Chrochne on 19 Apr, 2017 06:11
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Question for the builders of the EmDrive units:
What materials can I imagine under the term Electromagnetic metamaterials please?
https://en.wikipedia.org/wiki/Metamaterial#Electromagnetic_metamaterials
Is this something you are looking for to use in the construction of the EmDrive?
Thanks! -
#3542 by ThatOtherGuy on 19 Apr, 2017 08:59
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http://lhcb-public.web.cern.ch/lhcb-public/Welcome.html#RKstar
Quote18 April 2017: Lepton universality test probes physics beyond the Standard Model.
LHCb finds new hints of possible deviations from the Standard Model.
...The B0→K*0μ+μ- and B0→K*0e+e- decay rates could be affected by the presence of so-called heavy “virtual” BSM particles, which couple differently to electrons and muons than the gauge bosons, and therefore could sizeably increase or decrease the rate of the K*0μ+μ- and K*0e+e- final states, resulting in a deviation of RK*0 from the SM prediction.
Hmmmm...
Cool stuff !!
Adding some pointers
http://home.cern/about/updates/2017/04/lhcb-finds-new-hints-possible-standard-model-deviations
http://www.sciencealert.com/the-lhc-finds-tantalising-hints-of-deviations-in-the-standard-model-of-physics
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#3543 by Star One on 19 Apr, 2017 10:22
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Adding this to the above as it includes a short interview with Freya Blekman, CERN physicist and professor at the Vrije Universiteit in Brussels.
http://www.wired.co.uk/article/large-hadron-collider-b-meson
I believe this is the related CERN presentation but it's rather over my head.
http://lhcb-public.web.cern.ch/lhcb-public/Welcome.html#RKstar -
#3544 by Monomorphic on 19 Apr, 2017 18:11
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Another powered test. As you can see, noise floor into the test is very low now (top) and much improved upon earlier tests (bottom). What's interesting about this most recent test is the entire test stand has been moved 90 degrees from its earlier position, so that the test stand is now roughly east-west - yet the same anomalous "forward thrust" signal remains, albeit at a reduced level.
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#3545 by PotomacNeuron on 19 Apr, 2017 18:42
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Another powered test. As you can see, noise floor into the test is very low and much improved upon earlier tests. What's interesting about this most recent test is the entire test stand has been moved 90 degrees from its earlier position, so that the test stand is now roughly east-west - yet the same anomalous "forward thrust" signal remains, albeit at a reduced level.
Thank you! I think if you keep moving the settings to other directions, you will find zero and negative positions. If so, draw a force_vs_direction plot, it may be evident that Lorentz force is at work. -
#3546 by rq3 on 19 Apr, 2017 19:25
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Another powered test. As you can see, noise floor into the test is very low and much improved upon earlier tests. What's interesting about this most recent test is the entire test stand has been moved 90 degrees from its earlier position, so that the test stand is now roughly east-west - yet the same anomalous "forward thrust" signal remains, albeit at a reduced level.
This may give you some ideas:
http://cfisher.com/compass/swingcompass.htm -
#3547 by ThatOtherGuy on 19 Apr, 2017 19:44
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Another powered test. As you can see, noise floor into the test is very low and much improved upon earlier tests. What's interesting about this most recent test is the entire test stand has been moved 90 degrees from its earlier position, so that the test stand is now roughly east-west - yet the same anomalous "forward thrust" signal remains, albeit at a reduced level.
Thank you! I think if you keep moving the settings to other directions, you will find zero and negative positions. If so, draw a force_vs_direction plot, it may be evident that Lorentz force is at work.
At work ... Only when it comes to powered tests? Please expand your claim -
#3548 by Peter Lauwer on 19 Apr, 2017 19:51
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Another powered test. As you can see, noise floor into the test is very low and much improved upon earlier tests. What's interesting about this most recent test is the entire test stand has been moved 90 degrees from its earlier position, so that the test stand is now roughly east-west - yet the same anomalous "forward thrust" signal remains, albeit at a reduced level.
Thank you! I think if you keep moving the settings to other directions, you will find zero and negative positions. If so, draw a force_vs_direction plot, it may be evident that Lorentz force is at work.
Should be easy to test by replacing the frustum with a 50 ohm load. Or/and by changing the orientations of the frustum. And replacing it by a cylindrical cavity. -
#3549 by PotomacNeuron on 19 Apr, 2017 20:28
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Another powered test. As you can see, noise floor into the test is very low and much improved upon earlier tests. What's interesting about this most recent test is the entire test stand has been moved 90 degrees from its earlier position, so that the test stand is now roughly east-west - yet the same anomalous "forward thrust" signal remains, albeit at a reduced level.
Thank you! I think if you keep moving the settings to other directions, you will find zero and negative positions. If so, draw a force_vs_direction plot, it may be evident that Lorentz force is at work.
At work ... Only when it comes to powered tests? Please expand your claim
It will be at work if RF-on is accompanied by power-on. If RF-on is accompanied by power-on, or will alter power current, DC loops will interact with the Earth's magnetic field and generate Lorentz force. -
#3550 by PotomacNeuron on 19 Apr, 2017 20:31
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Another powered test. As you can see, noise floor into the test is very low and much improved upon earlier tests. What's interesting about this most recent test is the entire test stand has been moved 90 degrees from its earlier position, so that the test stand is now roughly east-west - yet the same anomalous "forward thrust" signal remains, albeit at a reduced level.
Thank you! I think if you keep moving the settings to other directions, you will find zero and negative positions. If so, draw a force_vs_direction plot, it may be evident that Lorentz force is at work.
Should be easy to test by replacing the frustum with a 50 ohm load. Or/and by changing the orientations of the frustum. And replacing it by a cylindrical cavity.
Yes, but care should be taken to deal with altered ground loops if the frustum was grounded to the arm.
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#3551 by Monomorphic on 19 Apr, 2017 20:43
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30W Spectrian class A linear amplifier board arrived as well as the Windfreak NV signal generator. I need to order a couple of MCX male to SMA female adaptors, some shielded twisted pair, and pick up a 14V Lipo. Will have an updated wiring diagram soon. Things will be much simpler, more powerful, more efficient, and better shielded.
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#3552 by xyzzy on 19 Apr, 2017 23:38
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30W Spectrian class A linear amplifier ...
... looks very nice but will certainly pull lots of current. When connecting, please make sure to use a completely separate battery that powers no other items in your setup and shares no other ground connections. Connect the amplifier and the battery by a piece of twisted pair or preferably coax directly. Note that the amplifier has many ground pins on its connector. Consider tying them together all except one pin, and use the tied group for the ground return to the battery and for nothing else, while the single remaining ground pin is used as "logic and control" ground with the remote on/off pin and the other control pins and may connect to other external circuitry. This will minimize the influence from ground loops by putting the "interconnect" between the grounds into the amplifier itself, where the impedances and hence any voltage drops in the return lines are the smallest possible. -
#3553 by Mezzenile on 20 Apr, 2017 01:40
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Another powered test. As you can see, noise floor into the test is very low and much improved upon earlier tests. What's interesting about this most recent test is the entire test stand has been moved 90 degrees from its earlier position, so that the test stand is now roughly east-west - yet the same anomalous "forward thrust" signal remains, albeit at a reduced level.
What is the direction of the detected movement of the frustum ? -
#3554 by ThatOtherGuy on 20 Apr, 2017 06:32
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30W Spectrian class A linear amplifier board arrived as well as the Windfreak NV signal generator. I need to order a couple of MCX male to SMA female adaptors, some shielded twisted pair, and pick up a 14V Lipo. Will have an updated wiring diagram soon. Things will be much simpler, more powerful, more efficient, and better shielded.
Nice critter; I suppose you'll also order some enclosure to host the board (and shield it) ? Or does the thing come with its own enclosure which you removed to show the board ?
[edit]
Found it myself, the critter has no enclosure; also, while searching infos, I found this
http://vk4ghz.com/2-4-3-4-dual-band-transverter/
which may be of some interest (notice the part related to the step-up converter ripple and related mod)
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#3555 by TheTraveller on 20 Apr, 2017 06:45
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Another powered test. As you can see, noise floor into the test is very low and much improved upon earlier tests. What's interesting about this most recent test is the entire test stand has been moved 90 degrees from its earlier position, so that the test stand is now roughly east-west - yet the same anomalous "forward thrust" signal remains, albeit at a reduced level.
Good data Jamie, from which we can obtain some initial information:
1st test:
02:29:24 Rf On
02:29:39 Displacement Positive
02:30:53 Displacement Zero
02:31:48 Rf Off
144 seconds of Rf On time
74 seconds of Positive displacement
2nd test:
02:30:26 Rf On
02:30:44 Displacement Positive
02:31:58 Rf Off
02:32:03 Displacement Zero
92 seconds of Rf On time
79 seconds of Positive displacement
Observations:
1) Even with different Rf on periods, the duration of the positive displacement was very similar, with the higher positive displacement achieved in the 2nd test being 5 sec linger than the 1st positive displacement duration.
2) In the 1st test, displacement returned to the starting value well before Rf power was removed.
3) In the 2nd test, displacement was rapidly returning to the starting value even with Rf power still applied.
Conjecture:
1) The duration of the positive displacement is not related to the Rf on period, which suggest the positive displacement observed is not due to Lorentz forces generated by the constant current flows that were present during the power on periods.
2) When the Thruster achieved peak displacement, it stopped accelerating, dropping out of Motor mode and stopped generating the accelerative Reaction force. At which time the stored torque in the torsion wire drove the thruster backward, even through Rf power was still applied. We see this clearly happening in the 1st test where the Rf power on period exceeded the positive duration period.
Jamie, please consider adding to the mA and uN data, the amount of displacement, in uM, the thruster moved.
Would welcome the theory guys to explain why the thruster apparently stopped producing force when it reached peak displacement / stopped accelerating? Could it be that to produce force, the thruster must be free to accelerate and when it can't do that, it stops producing force?
BTW Jamie's earlier data also shows these 3 effects:
1) Time from positive displacement to return to starting displacement is 65 - 75 sec.
2) If power on period is longer than positive displacement period, positive displacement period is not extended.
3) Positive displacement period is not related to power on period, ie not a Lorentz force effect.
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#3556 by Mezzenile on 20 Apr, 2017 09:33
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Thank you! I think if you keep moving the settings to other directions, you will find zero and negative positions. If so, draw a force_vs_direction plot, it may be evident that Lorentz force is at work.
The fact that the test setup is oriented in the East - West direction means that the Earth magnetic field is roughly perpendicular to the flow of the DC portion of the electric circuit. The associated perturbative Lorentz force should be so close to its maximum.
The fact that according to its orientation the action is mainly additive or substractive to the supposed EM-drive effect could be assessed by a test performed after a flip of the direct and return parts of the DC circuit or a flip of the frustum orientation. -
#3557 by Star One on 20 Apr, 2017 09:49
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Would this be at all relevant to this topic?
Study Reveals That a Strange Force Is Affecting the Quantum WorldQuoteIn a paper published in the journal Physical Review Letters, the researchers observed what’s known as the Casimir effect, a force found between quantum objects inside a vacuum due to fluctuations of electromagnetic waves. When viewed through the paradigm of classical physics, the force can’t be seen. Researchers have to apply quantum field theory to spot it.
Manjavacas and his team studied the Casimir effect as a lateral force that applies itself to rotating quantum objects as a product of collision and came to an interesting conclusion. “The nanoparticle experiences a lateral force as if it were in contact with the surface, even though [it] is actually separated from it,” Manjavacas explained to UNM. “It’s a strange reaction but one that may prove to have significant impact for engineers.”
https://futurism.com/study-reveals-that-a-strange-force-is-affecting-the-quantum-world/
Here is the paper.
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.118.133605 -
#3558 by Monomorphic on 20 Apr, 2017 11:58
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Nice critter; I suppose you'll also order some enclosure to host the board (and shield it) ? Or does the thing come with its own enclosure which you removed to show the board ?
The board has shields over the RF input and main transistor/RF output (I have them removed in the above image). I do not think another shield over the entire thing is necessary. -
#3559 by PotomacNeuron on 20 Apr, 2017 12:48
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Thank you! I think if you keep moving the settings to other directions, you will find zero and negative positions. If so, draw a force_vs_direction plot, it may be evident that Lorentz force is at work.
The fact that the test setup is oriented in the East - West direction means that the Earth magnetic field is roughly perpendicular to the flow of the DC portion of the electric circuit. The associated perturbative Lorentz force should be so close to its maximum.
The fact that according to its orientation the action is mainly additive or substractive to the supposed EM-drive effect could be assessed by a test performed after a flip of the direct and return parts of the DC circuit or a flip of the frustum orientation.
The force might be in its maximum, but it is the torque that is the main factor that influences the balance displacement. If the DC loop is in the vertical plane defined by gravity and the balance arm, when the arm is in East - West direction, we will see the thrust to be close to its minimum (zero, if the loop is perfectly in the said plane). This claim is supported both by experiment and by theory.
The attached picture is a screenshot from may paper, https://arxiv.org/pdf/1510.07752.pdf, fig 5. In my experiment, when the arm pointed to the East, the thrust was much smaller than when it pointed to the North.
Theoretically, the measured 'thrust' is related to the torque. When the said plane where the DC loop resides is parallel to the magnetic field (this is the case when arm points North - South), the Lorentz forces caused by currents in the two vertical lines of the loop point to opposite directions, and both are perpendicular to the plane, maximizing the torque. On the other hand, if the arm points East - West, the two opposite forces are in the same plane, minimizing the torque.
