Re: [Phys-l] Force fields Was: Re: voltage (was: Ludwik's Kindle again)

[Bernard Cleyet <bernardcleyet@redshift.com>]

On 2011, Dec 29, , at 10:58, John Denker wrote:

> It can also be inferred by measuring the field elsewhere and
> applying the Maxwell equations.


This appears to be the bead method.   The scattering parameters are measured at the device's ports as a function of the position of the bead?????


bc  



 "The Step Motor moves a small metal or a dielectric bead linearly through a cavity. The Network Analyzer

measures the change of resonant frequency which is related to the local electrical field

where the bead passes. This information is useful to evaluate the field distribution ..."




https://docs.google.com/viewer?a=v&q=cache:W6Gfqm-f7CIJ:eddata.fnal.gov/lasso/summerstudents/papers/2011/Koech.pdf+bead+pull+measurement&hl=en&gl=us&pid=bl&srcid=ADGEESi8BebTJp6kR8U6cRrOzm0AbX0RUxWdAjFdCth7B9kDaYo6Go5iome9jESXEwp4JxkcZnh7QTqZ_C2XZyMzGhWAC34zuH8NJZVBjdf869hS5RDndRxthTQ_g2sGKMdtvdRWu8nQ&sig=AHIEtbT1eVD1kmB_COKdGo670GzVzRvf2A



http://eddata.fnal.gov/lasso/summerstudents/papers/2011/Koech.pdf