Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site pur-ee.UUCP Path: utzoo!watmath!clyde!burl!hou3c!hocda!houxm!ihnp4!inuxc!pur-ee!kk9w From: kk9w@pur-ee.UUCP (Andersen) Newsgroups: net.physics Subject: eV Revisited Message-ID: <1559@pur-ee.UUCP> Date: Wed, 8-Feb-84 08:46:22 EST Article-I.D.: pur-ee.1559 Posted: Wed Feb 8 08:46:22 1984 Date-Received: Fri, 10-Feb-84 02:45:43 EST Organization: Electrical Engineering Department , Purdue University Lines: 16 I think some people missed the point of what I said in my last note on this subject of mass vs. energy. I think what I wrote was clear, but here is another attempt. Mass and energy are related to each other by a constant. This constant is c^2. If you know something's mass and want the energy associated with that mass, you use the well known equation E=mc^2. Likewise, to obtain mass from energy, divide the energy by c^2. The point of the whole thing is this. You cannot specify mass by using units of energy. You have to use units of mass, and the unit of mass associated with eV is eV/c^2. Not simply eV. Not a big point, but one I thought I should make. Dave pur-ee!kk9w