Original poster: "PotLuck by way of Terry Fritz <twftesla-at-qwest-dot-net>" <potluck-at-xmission-dot-com> Hi list, Happened onto this and thought it may be useful. This is a HUGE list of dielectric constants for various materials. Like... Tide (loose from box) 1.6 LOL!!! <http://www.asiinstr-dot-com/dc1.html>http://www.asiinstr-dot-com/dc1.html Rick W. Salt Lake City