A shout out from PBS. Yes I'm still alive. I'm wrapped around gravitoelectromagnetism (the theory(ies) is/are a mess) and whether photons with effective mass within waveguide can create GEM fields which in turn influence the motion of moving air molecules via the Gravitational Lorentz Force within the frustum. I'm devoting all of my time to understanding the hypothetical graviphoton. Yes I'm in way over my head. 😁I get the sense that GR is completely correct of course but it is not the end. There is much more to learn. And my experimental efforts are on hold until I stop failing. I really need a better high power solid state solution which I can power with DC and my battery solution is not going well. I'm probably going to have to wait until I get back home to America.
That's a good idea and time permitting I might do one. Here is another from MIT that reconstructs acoustics wave patterns from an object through glass with video of that remote object. Video patterns are simply vibrations and movement of a surface. I was thinking it would be a great way to monitor movement of not only movements in air, but through a vacuum chamber window.
Quote from: SeeShells on 10/15/2015 12:29 pmThat's a good idea and time permitting I might do one. Here is another from MIT that reconstructs acoustics wave patterns from an object through glass with video of that remote object. Video patterns are simply vibrations and movement of a surface. I was thinking it would be a great way to monitor movement of not only movements in air, but through a vacuum chamber window.This reminds me of the attempts to find the voice of the craftsman who was registered in ceramics while he was working on his potter's wheel.This would return the voices of potters living in the days of antiquity !
Quote from: SeeShells on 10/15/2015 02:36 pmIt might look as if someone else had do something like this, way before us. This is just one small step, isn't it?Little off topic but it's the driving reason we are all here.http://www.theatlantic.com/science/archive/2015/10/the-most-interesting-star-in-our-galaxy/410023/Cross-referenced to the last few pages of this thread: http://forum.nasaspaceflight.com/index.php?topic=16581.0 One of the authors of the paper being cited in The Atlantic is actively discussing the Kepler team findings on the thread, so hit him up with questions (read the paper first please!!! http://arxiv.org/pdf/1509.03622v1.pdf).
It might look as if someone else had do something like this, way before us. This is just one small step, isn't it?Little off topic but it's the driving reason we are all here.http://www.theatlantic.com/science/archive/2015/10/the-most-interesting-star-in-our-galaxy/410023/
Guess where I'll be going this weekend: http://bucyruscopperkettle.com/
Yes I'm still alive. I'm wrapped around gravitoelectromagnetism (the theory(ies) is/are a mess) and whether photons with effective mass within waveguide can create GEM fields which in turn influence the motion of moving air molecules via the Gravitational Lorentz Force within the frustum. I'm devoting all of my time to understanding the hypothetical graviphoton. Yes I'm in way over my head. 😁I get the sense that GR is completely correct of course but it is not the end. There is much more to learn. And my experimental efforts are on hold until I stop failing. I really need a better high power solid state solution which I can power with DC and my battery solution is not going well. I'm probably going to have to wait until I get back home to America.
Quote from: Mezzenile on 10/16/2015 03:36 amQuote from: SeeShells on 10/15/2015 12:29 pmThat's a good idea and time permitting I might do one. Here is another from MIT that reconstructs acoustics wave patterns from an object through glass with video of that remote object. Video patterns are simply vibrations and movement of a surface. I was thinking it would be a great way to monitor movement of not only movements in air, but through a vacuum chamber window.This reminds me of the attempts to find the voice of the craftsman who was registered in ceramics while he was working on his potter's wheel.This would return the voices of potters living in the days of antiquity ! Ah, the "Lazarus Bowl" (X-Files).
There was some discussion of quantum fluctuations in earlier iterations of this thread such as with Dr White's QVPT thing. Well here is something that will allow someone investigating this hypothesis to tell what those sneaky fluxes are up to:http://www.sciencedaily.com/releases/2015/10/151013103115.htm
Quote from: Stormbringer on 10/16/2015 09:12 pmThere was some discussion of quantum fluctuations in earlier iterations of this thread such as with Dr White's QVPT thing. Well here is something that will allow someone investigating this hypothesis to tell what those sneaky fluxes are up to:http://www.sciencedaily.com/releases/2015/10/151013103115.htmThis is the superconducting version of a very old experiment. (did this as a teenager w/ war-surplus gear, great fun!)By going to a superconductor, the usual resistive losses are eliminated and the variation in Q can be blamed on the vacuum fluctuations, but the influence of the reflected (virtual ?) wave remains the same.They have another very interesting experiment using a superconducting-transition ring resonator showing time-reversal symmetry-broken states, which could also be relevant.Håkansson, M., Löfwander, T. and Fogelström, M. (2015) Spontaneously broken time-reversal symmetry in high-temperature superconductors. Nature Physics (1745-2473). Vol. 11 (2015), 9, pp. 755-760. dx.doi.org/10.1038/nphys3383
Quote from: SeeShells on 10/14/2015 12:26 amYou may want to step through the distance between the end plates and see the resonances. It will be interesting to compare. Also did you see the parts bins in the pictures of the shop, that's just part of all of them... yes I have spares parts and beadsJust back from daily rad. Will do the analysis runs this evening or early tomorrow and report back.Take apart the bottom maggie assy where the heater leads are. Should find an inline filter on each lead. Might as well remove them from the dead maggie and put them in series on the -DC feed from your inverter.
You may want to step through the distance between the end plates and see the resonances. It will be interesting to compare. Also did you see the parts bins in the pictures of the shop, that's just part of all of them... yes I have spares parts and beads
Quote from: TheTraveller on 10/14/2015 06:19 amQuote from: SeeShells on 10/14/2015 12:26 amYou may want to step through the distance between the end plates and see the resonances. It will be interesting to compare. Also did you see the parts bins in the pictures of the shop, that's just part of all of them... yes I have spares parts and beadsJust back from daily rad. Will do the analysis runs this evening or early tomorrow and report back.Take apart the bottom maggie assy where the heater leads are. Should find an inline filter on each lead. Might as well remove them from the dead maggie and put them in series on the -DC feed from your inverter.I mentioned this earlier and am not sure if it was missed or ignored. Can a meep run be done without having the end cap being perfectly axially aligned with the frustrum body? I can't help but reflect on all the geometry discussions that have occurred, but we still don't have any idea about how good the alignment has to be to get the modes to stabilize. E.g does the alignment have to be within a degree, or a thousandth of a degree? Does meep even have the resolution to be able to evaluate this type of sensitivity?
"This is the superconducting version of a very old experiment. (did this as a teenager w/ war-surplus gear, great fun!)"I am so impressed, all I did was build a radio and TV. You were doing superconducting experiments! Shell
But the first question I have is, "Why would you want to model misalignment, what is to be gained?"
Quote from: original_mds on 10/17/2015 04:03 pmI mentioned this earlier and am not sure if it was missed or ignored. Can a meep run be done without having the end cap being perfectly axially aligned with the frustrum body? I can't help but reflect on all the geometry discussions that have occurred, but we still don't have any idea about how good the alignment has to be to get the modes to stabilize. E.g does the alignment have to be within a degree, or a thousandth of a degree? Does meep even have the resolution to be able to evaluate this type of sensitivity?Can it be done? Of course it can be done, meep source code is available, meep is a numerical algorithm running with a geometric model (in our case). Any reasonable model you care to take the time to construct in a meep control file can be run. Here are the components you have to work with in native mode. http://ab-initio.mit.edu/wiki/index.php/Meep_Reference#geometric-objectOf course if needed, you can add stuff using the C++ language and recompile. But the first question I have is, "Why would you want to model misalignment, what is to be gained?"
I mentioned this earlier and am not sure if it was missed or ignored. Can a meep run be done without having the end cap being perfectly axially aligned with the frustrum body? I can't help but reflect on all the geometry discussions that have occurred, but we still don't have any idea about how good the alignment has to be to get the modes to stabilize. E.g does the alignment have to be within a degree, or a thousandth of a degree? Does meep even have the resolution to be able to evaluate this type of sensitivity?