In reply to Russ George's message of Thu, 17 Mar 2016 11:18:21 -0700: Hi, [snip] >In building a Shawyer EM Drive cavity copper is typically used but Shawyer >notes a higher Q would result with silver. Would a cavity that was made of >copper sheet then electroplated with silver suffice to give the cavity the Q >of silver? Is there any potential for improved Q based on the design of the >internal cavity antennae that emits the microwaves.
The conductivity of silver relative to copper is not all that much, so I wouldn't expect much of a gain anyway. Far more gain should be obtained by cooling. According to Tesla, cooling with liquid nitrogen gives a 5 fold improvement. Regards, Robin van Spaandonk http://rvanspaa.freehostia.com/project.html
