Hello Steve, It is simple. On a PCB select an area where two conductors are running parallel to each other. Connect a power source through a rheostat. Apply some water drops so as to cover two tracks. Tap water will be fine. Increase voltage slowly and you should see migration growth ( depending conductivity of water which you can change by adding common salt to water). Have fun. "Stephen R. Gregory" wrote: > How the heck are yew good ol' boys doin'? > > (Spitoooie!!)...'scuse me thar...hadda get rid of my chew, cain't talk with a > mouthful of terbacky...(hitchin' my bib overalls up) > > Anyhoo, a while back, some good ol' boy posted a simple way to actually show > electromigration (fancy word for us country boys ain't it) in progress...you > could actually see it happening. Something about using an overhead projector > and a 9-volt battery...or something like that. > > Does anybody remember that? I need some way to graphically show this > phenomena happening...('nuther fancy word huh?...phenomena...) > > YEEEE-HAW!!! > (that's good ol' boy talk for thanks a lot!) > > -Steve "Jethro" Gregory- (GRIN) > > ############################################################## > TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c > ############################################################## > To subscribe/unsubscribe, send a message to [log in to unmask] with following text in > the body: > To subscribe: SUBSCRIBE TECHNET <your full name> > To unsubscribe: SIGNOFF TECHNET > ############################################################## > Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional > information. > If you need assistance - contact Keach Sasamori at [log in to unmask] or > 847-509-9700 ext.5315 > ############################################################## ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ##############################################################