Hi folks - the answers: 1) What element has been discovered "twice"? First in 1841 and second in 1896. Bonus points if you can name the 1841 and 1896 scientists that made the discoveries. Uranium (U) = 1841 by Peligot and 1896 by Becquerel (reference - Structure-Property Relations in Nonferrous Metals by Russell and Lee) I have severely underestimated the Technet community - many, many folks had the correct answers very quickly. I'll make the next question a bit tougher. Have a good weekend! Dave Hillman Rockwell Collins [log in to unmask] ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------