From: utzoo!decvax!harpo!eagle!mhtsa!alice!npoiv!npois!houxm!hogpc!houxq!3484ajr Newsgroups: net.physics Title: Screwdriver Mystery Article-I.D.: houxq.360 Posted: Tue Apr 12 14:26:33 1983 Received: Wed Apr 13 20:39:01 1983 A quote from the Better Homes And Gardens Handyman's Book : "To gain power without tip jumping from slot, use longest screwdriver you can." My own experience in using two screwdrivers with identical handles and sockets with different shaft lengths supports this quotation. Why?