Interesting Jay Bruss from NASA has clearly done a great deal of investigating the matter. (search jaybrusse on You Tube for more of his collection) http://www.youtube.com/watch?v=kYlWjqb-Qvg&NR=1 http://www.youtube.com/watch?v=_QmBDDdXaUg These are a series of segements to a video on the topic http://www.youtube.com/watch?v=pGZUdnPoU_I&NR=1 http://www.youtube.com/watch?v=o758FoVY_8w&NR=1 http://www.youtube.com/watch?v=goyWEYGKPrQ&NR=1 http://www.youtube.com/watch?v=nO-7aFZ8c3E&NR=1 http://www.youtube.com/watch?v=zvl1bR5N1U4&NR=1 ______________________________________________________________________ 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 -----------------------------------------------------