RE: [Vo]: John Herman, EMdrive

[Remi Cornwall]

J, Good point about the filament and the delayed start up. I hadn’t thought of that.   So I’m willing to believe that it could be more than just a microwave oven spewing hot gas. I’ll try and contribute to the EM thread once I read the back posts.   What about the issue of the group and phase velocities? Swings and roundabouts? R.   From: john herman [mailto:[EMAIL PROTECTED] Sent: 18 September 2006 07:22 To: vortex-l Subject: [Vo]:   Dear Vo.,     Can any Vo help to answer some simple questions regarding the EM reaction less drive recently reported:    Below are a series of general questions and the idea is not to be complex but to ask for some simple measures to try to arrive at a better understanding of the effects that have been observed and reported.   Microwave EM Drive General Questions   NB:  Most microwave tubes used for the ISM, or Industrial, Scientific and Medical band are the same as those used to heat food.         These are generally Magnetron tubes and employ a heated filament a permanent magnet, a resonant cavity and thus are able to produce a significant microwave emission at ranges from 500 to 1,500 watts without terribly expensive tubes.         It Should Be Noted:      A great many of these tubes are vacuum tubes and at the beginning of the operation behave as follows:             [a]   few electrons flow within the tube even though about 2,100 volts DC ( as a pulsating half wave, slightly filtered resonant capacitor wave form) are applied between the cathode and the anode           [b]  then the filament heats up... and this takes about 0.25 seconds to about 2.0 to 3.0 seconds for useful heat to be developed           [c]   once full heat of the filament is developed            [d]  THEN  the full DESIGN LEVEL of electron emission obtains.                     [d]   AND NOW... and only now the generally maximum effective electron      beam current will be developed     NB:   The Beam current can be thought of as a current flowing through a wire....            A magnetic field is produced by such flowing current as a beam of electrons             JUST AS a magnetic field would be produced if the same current or similar current were to flow in a solid conductor, such as a length of metal wire.     The first set of questions is directed toward the magnitude of drive, push or the like with respect to varied parameters   For the first question set the power, force, thrust and or measured what have you will be taken to be in grams.   First -----> (A)    How many grams at zero power?  How is the power measured? (B)    How many grams at one half power [1/2] power? How is the power measured? (C)    How many grams at three quarter power [3/4]?  How is the power measured?   Second ----->      For the second set of questions we ask how much force or "push" is measured in different directions.  For example let us say the device is assigned an axis, and let us call it up and down or top and bottom.   To make things easier the device will be assigned an arbitrary set of directionality...  and we will call  these "O" and "B"        Let us think of the EM device as one would a small solid fuel rocket, such as a bottle rocket we might see on a holiday fireworks.          "O"  =  OUT... that will be the direction that would be equivalent to the output nozzle of a regular reaction rocket or jet engine or the fireworks..         "B" = BACK ... that would be the back of the rocket or engine....     SO:                 Please let us again  address the EM microwave system:     Questions about direction of push, thrust and the like and number of grams.... Again, we ask, at zero, 1/2 and 3/4 and full power, in grams:      (A)  East    (B)  West    (C)  North    (D)  South    (E)  UP... eg O or Output (out) pointed to sky    (F)  DOWN  eg B or Back (back) pointed to sky    NB:        O is where the exhaust gas comes from                         AND         B is the other end ... or the back of the rocket   Again, the above at the varied powers......       NEXT:        With a generally sensitive magnetometer, ie, Hall Effect or better yet permalloy bridge magnetic sensor......  What is-are the magnetic field produced by the EM Drive at 1/4, 1/2 and 3/4 and full power?        What is are any and all "weight" measures with NO POWER in all of these different directions of position?     FINALLY... (FOR NOW)         The device must be subjected to the above... AND ... all parameters must be measured.        THEN The device must be placed within a double walled air isolated permeable metal container... and all tests repeated.     This container may be made of standard soft steel 20 AWG sheet metal of ferrous types and this magnetic shield MUST be 3 to 10 inches form the device.  THEN the second wall of the must be separated by 5 to 10 inches from the first shield and must also be made of soft iron alloy.  BOTH shield members MUST be demagnetized and-or the material must be of such a nature as to exhibit no "magnetic Memory" or ability to retain magnetic field.       NB:  Earth field is NOT only North AND South ... but also exhibits fields at other angles.       The magnetic anti artifact tests MUST me performed.    OR:   persons may be fooled  OR    persons may fool themselves          Best will and spirit to all      nn