From: utzoo!decvax!pur-ee!purdue!Physics:retief Newsgroups: net.misc Title: Re: Ants on spinning wheels Article-I.D.: pur-phy.426 Posted: Thu Aug 5 13:42:16 1982 Received: Sun Aug 8 03:31:08 1982 References: utcsrgv.493 As far as the question of "is space is physical thing". Yes, you can ask any particle Physist that. For example, did you know that vacuum is NOT empty! The most perfect vacuum God could ever make would have "virtual particles" zipping in and out of existance. Vacuum can exert a pressure on you! It is known is the Casimir effect (or something like that.) In a vacuum two parallel metal plates would attract each other due to the pressure of vacuum (over and above the gravitational and electrical attractions they have.) - Dwight -