In a message dated 1/7/99 11:25:31 PM Mountain Standard Time, tesla-at-pupman-dot-com writes: > With regard to an archimedian flat spiral primary, does the width of the > strip matter?? it doesnt seem to come into the equation. > Mark, The width of the strip is taken into account with the number of turns and the width of the coil(the b variable that is multiplied by 11).