http://physics.stackexchange.com/questions/190018/does-radiation-force-depend-on-group-velocity-or-on-phase-velocity
Phase velocity is an almost useless piece of information you'll find in waveguide mathematics; here you multiply frequency times guide wavelength, and come up with a number that exceeds the speed of light!Be assured that the energy in your wave is not exceeding the speed of light, because it travels at what is called the group velocity of the waveguide:
Congrats New Horizons team, very impressed...the best media question I heard was "when are we going back?" The answer was interesting, there are designs being worked on. IMHO, the key for planetary science and space exploration success is becoming clear. It is not more sensitive instrumentation, it is not lower cost hardware...it is faster propulsion. This is your challenge scientific community...to shrink the fabric of space and time with modern propulsion research. To the propulsion industry...think outside the box. Your equations have shown us that propellants will never get us to where we want to go...faster and farther. Perhaps in this forum, one of us may help show you the way.
Quote from: TheTraveller on 07/14/2015 04:16 amInteresting. Just found a 1kW 2.4-2.5GHz Rf amp. Don't think I'll need it for my tests but nice to know it is available.With that Rf amp could maybe generate 1N of Force.Wow. Do you have a web link for that beast?
Interesting. Just found a 1kW 2.4-2.5GHz Rf amp. Don't think I'll need it for my tests but nice to know it is available.With that Rf amp could maybe generate 1N of Force.
Doctor Rodal, I found an interesting discussion about validating an FDTD model by calculating the Poynting vector field.Maybe it's old news for you, but I'm posting it here for others trying to independently study the aero's MEEP model. It provides some tips.https://scicomp.stackexchange.com/questions/10692/fdtd-poynting-vector
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Quote from: WarpTech on 07/14/2015 02:37 am...Thanks for the reply.Before I address you're comments, maybe one way for me and people like me to get our minds around what you are doing is for you to use actual numbers in place of variables within your equations, and in so doing demonstrate COE. Real numbers have a way of cutting through the abstractions. Ex: We have an emdrive that gets 10 N/W, less than Shawyer's claimed superconducting specific thrust. ....
Real numbers have a way of cutting through the abstractions.
Quote from: flux_capacitor on 07/14/2015 10:39 amQuote from: TheTraveller on 07/14/2015 04:16 amInteresting. Just found a 1kW 2.4-2.5GHz Rf amp. Don't think I'll need it for my tests but nice to know it is available.With that Rf amp could maybe generate 1N of Force.Wow. Do you have a web link for that beast?No link. Was told it was possible on a 8-10 week lead time. Price $2.5k. Min order 10.
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Do you believe that Special Relativity is an accurate and correct theory, or are you one of "those" people who thinks it is wrong?
This is the relativistic energy equation for a rocket, or any vehicle where mass-energy is being expended to produce propulsion.
You may connect an external power source. Simply change the sign of Pin*t from negative, to positive. Very simple. But now you have an unlimited external supply of energy to start with. You don't need an over-unity machine.
You will need an accelerometer AND two clocks, (one left behind) not a velocimeter, to determine the state of the vehicle. What I am claiming, and "correctly" showing is that it obeys Special and General Relativity.
Tell me, do you remember the resolution of the Twin Paradox? Because it is the same paradox, just offered under a different scenario. If you do not remember how to solve it. Please go back and review it as I have done. It may jog your memory.
Although some texts assign a crucial role to the acceleration of the travelling twin at the time of the turnaround,[7][8][9][10] others note that the effect also arises if one imagines separate outward-going and inward-coming travellers, who pass each other and synchronize their clocks at the point corresponding to "turnaround" of a single traveller. In this version, acceleration plays no direct role
You must prove over-unity using a finite supply of energy, not an external source
10 N/W cannot be considered to be a real number. There is no experimental data justifying this number for an EM Drive.
Quote from: aero on 07/14/2015 12:00 amQuote from: leomillert on 07/13/2015 11:02 pmI have just installed MEEP and NSF-1701.ctl is sitting here on my hard drive.How can I help?Good! Run it and see how the data compares to posted data. In particular, generate some csv files, then "diff" them with the "identical" data on Google drive. If you haven't changed any settings, the data should be there. If you change anything at all, chances are your data will be different. If that is the case post a copy of your file to me and I'll run it as is then post a some csv files back to you.I think that is probably the most straight forward way to check installations. Of course your computer word length may be different so that might not work either.aeroI ran "meep NSF-1701.ctl" and got the following files: Name Size MD5-------------------------- ------------ ---------------------------------------------------------eps-000000000.h5 127.3M 7028e98b42305c0fc5bd285c70766e17ex.h5 1.7G f515221aee0ff2b82a32c69ee4c4a54bey.h5 1.7G 069ec826d6803e2e67f0619617c641b7ez-000000003.h5 127.3M 4865721e49192853eb998efe0fa76b0fez-000000021.h5 127.3M 8675ee3158b64285aa1fb4e36833217bez.h5 1.7G 920f598802f7eee417465c0f2703872chx.h5 1.7G c4c14a37208eed92f8dff0c1aef7762chy.h5 1.7G 01ff935ad90d58e0d31f93c84244ee95hz.h5 1.7G f9ee7c2e08c895bd57ac7b7cbc200913Should I use h5totxt to convert each file, individually?What is the expected output? The Google Drive has a lot of .csv files, I'm not sure which ones I'm supposed to independently replicate and compare to.
Quote from: leomillert on 07/13/2015 11:02 pmI have just installed MEEP and NSF-1701.ctl is sitting here on my hard drive.How can I help?Good! Run it and see how the data compares to posted data. In particular, generate some csv files, then "diff" them with the "identical" data on Google drive. If you haven't changed any settings, the data should be there. If you change anything at all, chances are your data will be different. If that is the case post a copy of your file to me and I'll run it as is then post a some csv files back to you.I think that is probably the most straight forward way to check installations. Of course your computer word length may be different so that might not work either.aero
I have just installed MEEP and NSF-1701.ctl is sitting here on my hard drive.How can I help?
Quote from: leomillert on 07/14/2015 11:01 amQuote from: aero on 07/14/2015 12:00 amQuote from: leomillert on 07/13/2015 11:02 pmI have just installed MEEP and NSF-1701.ctl is sitting here on my hard drive.How can I help?Good! Run it and see how the data compares to posted data. In particular, generate some csv files, then "diff" them with the "identical" data on Google drive. If you haven't changed any settings, the data should be there. If you change anything at all, chances are your data will be different. If that is the case post a copy of your file to me and I'll run it as is then post a some csv files back to you.I think that is probably the most straight forward way to check installations. Of course your computer word length may be different so that might not work either.aeroI ran "meep NSF-1701.ctl" and got the following files: Name Size MD5-------------------------- ------------ ---------------------------------------------------------eps-000000000.h5 127.3M 7028e98b42305c0fc5bd285c70766e17ex.h5 1.7G f515221aee0ff2b82a32c69ee4c4a54bey.h5 1.7G 069ec826d6803e2e67f0619617c641b7ez-000000003.h5 127.3M 4865721e49192853eb998efe0fa76b0fez-000000021.h5 127.3M 8675ee3158b64285aa1fb4e36833217bez.h5 1.7G 920f598802f7eee417465c0f2703872chx.h5 1.7G c4c14a37208eed92f8dff0c1aef7762chy.h5 1.7G 01ff935ad90d58e0d31f93c84244ee95hz.h5 1.7G f9ee7c2e08c895bd57ac7b7cbc200913Should I use h5totxt to convert each file, individually?What is the expected output? The Google Drive has a lot of .csv files, I'm not sure which ones I'm supposed to independently replicate and compare to.If you have HDFview installed, look at the images of the eps file, then the two ez-000000003.h5 and ez-000000021.h5 just to verify that the antenna is there and in the correct location near the small end of the cavity. If you don't have or don't know how to use HDFview then just use h5topng to generate images of those files. Make one or more csv files of any of the other .h5 files. Just pick one, ex.h5 is the first. Make a csv file of the final image, image 13, then we'll help you to find it on Google drive. It will be in the NSF-1701 folder under csv files but I need to know which one to look for.
McCulloch has been writing more on his theory:MiHsC and EmDrive: Clarification (dated today July 14 2015 http://physicsfromtheedge.blogspot.com/2015/07/mihsc-and-emdrive-clarification.htmlMcCulloch<<It seems, after several comments I've received, and from reviewers too, that the way MiHsC works on the emdrive is not quite clear, so here is an attempt to clarify why I think you get a push consistently towards the narrow end from MiHsC and why, although new physics, it is at least perfectly self-consistent.>>Critique of Shawyer's emdrive theoryhttp://physicsfromtheedge.blogspot.com/2015_06_01_archive.htmlMcCulloch<< I'd like here to criticise Shawyer's theory of it, which I believe is confused. >>
Quote from: aero on 07/14/2015 04:04 amQuote from: Rodal on 07/14/2015 03:54 amQuote from: WarpTech on 07/14/2015 03:51 amQuote from: SeeShells on 07/14/2015 03:24 amDon't have the software to do the integration on the images but I did the large end.I hope you have good solder joints people! The maximum stress seems to ride the seem of the large end. Hence, the use of bolts, not solder to hold it together. Hmmm...It makes sense though, that when the mode energy reaches the big end, it has already expanded. So after that, most of the reflections must be concentrated around the perimeter of the big end. That's why I want to see a simulation of it turned off. I want to see how far back up the frustum the wave goes after it is reflected from the big end, and for how long.ToddIt is a location NEAR the big end, but NOT at the big end. I still have to plot the stresses at the big and at the small endsIn order to do that, don't you need csv files at the big and small ends? If so, tell me where they are. That is, what rows of the xz or xy csv files that you have correspond to the big and small ends? Then I can cut x slices at those rows and make the right csv files.I thought you had determined that these csv files were one of the circular cross-sections bases\\ts03\\s3-exx.csv\\ts03\\s3-exx.csv\\ts03\\s3-eyx.csv\\ts03\\s3-ezx.csv\\ts03\\s3-hxx.csv\\ts03\\s3-hyx.csv\\ts03\\s3-hzx.csvetc. up to ts13dated 07/03/2015 in the folder "time slices 3-13"Please let me know whether these cross-sections are of one of the bases (if so what base) or if this cross section is not located at a base at what column is this cross-section located (the files are not labeled as to such location, all they state is exx.csv)Reminder: remember that your original csv file had a cross-section that contained noise, and you traced it back to the fact that the cross-section was outside the EM Drive in nowhere land. Then you determined where the metal base was located.
Quote from: Rodal on 07/14/2015 03:54 amQuote from: WarpTech on 07/14/2015 03:51 amQuote from: SeeShells on 07/14/2015 03:24 amDon't have the software to do the integration on the images but I did the large end.I hope you have good solder joints people! The maximum stress seems to ride the seem of the large end. Hence, the use of bolts, not solder to hold it together. Hmmm...It makes sense though, that when the mode energy reaches the big end, it has already expanded. So after that, most of the reflections must be concentrated around the perimeter of the big end. That's why I want to see a simulation of it turned off. I want to see how far back up the frustum the wave goes after it is reflected from the big end, and for how long.ToddIt is a location NEAR the big end, but NOT at the big end. I still have to plot the stresses at the big and at the small endsIn order to do that, don't you need csv files at the big and small ends? If so, tell me where they are. That is, what rows of the xz or xy csv files that you have correspond to the big and small ends? Then I can cut x slices at those rows and make the right csv files.
Quote from: WarpTech on 07/14/2015 03:51 amQuote from: SeeShells on 07/14/2015 03:24 amDon't have the software to do the integration on the images but I did the large end.I hope you have good solder joints people! The maximum stress seems to ride the seem of the large end. Hence, the use of bolts, not solder to hold it together. Hmmm...It makes sense though, that when the mode energy reaches the big end, it has already expanded. So after that, most of the reflections must be concentrated around the perimeter of the big end. That's why I want to see a simulation of it turned off. I want to see how far back up the frustum the wave goes after it is reflected from the big end, and for how long.ToddIt is a location NEAR the big end, but NOT at the big end. I still have to plot the stresses at the big and at the small ends
Quote from: SeeShells on 07/14/2015 03:24 amDon't have the software to do the integration on the images but I did the large end.I hope you have good solder joints people! The maximum stress seems to ride the seem of the large end. Hence, the use of bolts, not solder to hold it together. Hmmm...It makes sense though, that when the mode energy reaches the big end, it has already expanded. So after that, most of the reflections must be concentrated around the perimeter of the big end. That's why I want to see a simulation of it turned off. I want to see how far back up the frustum the wave goes after it is reflected from the big end, and for how long.Todd
Don't have the software to do the integration on the images but I did the large end.