1. Engineering: Re: Hubcaps change positions. How do caps get out of sync?, Adrian Popa, Directors Office, Hughes Research Laboratories Thu Aug 19 12:47:41 1999
2. Engineering: Re: Use of UHF antennas out of Bandwidth Range!!, Adrian Popa, Director Emeritus, Hughes Research Laboratories Mon Jul 30 23:19:24 2001
3. Physics: Re: Can you restrict electromagnetic waves to a certain size and shape?, Adrian E. Popa, Retired Laboratory Director Tue Jan 15 00:45:36 2008
4. Physics: Re: Centre of mass change of melting ice + tray sys. in gravity-free hall?, Adrian E. Popa, Laboratory Director Emeritus Fri Jan 9 01:51:15 2004
5. Physics: Re: Is it possible to IR modulate a UV carrier wave?, Adrian Popa, Directors Office, Hughes Research Laboratories Mon Apr 24 10:08:41 2000
6. Engineering: Re: Future transportation, Adrian Popa, Directors Office, Hughes Research Laboratories Mon Mar 30 09:48:00 1998
7. Physics : Re: I need input on practical experiements using holography., Adrian Popa, Staff Optical/Microwave Physics Thu Jul 3 18:51:54 1997
8. Engineering: Re: How to set up a proximity circuit using photodiodes, Adrian Popa, Director Emeritus, Hughes Research Laboratories Thu Dec 6 02:06:14 2001
9. Physics : Re: image resolution limits, Adrian Popa, Staff Optical/Microwave Physics Wed May 21 15:00:24 1997
10. Physics: Re: FollowOn 1139487116.Ph (to Mr. Adrian Popa), Adrian E. Popa, Retired Laboratory Director Sun Apr 23 17:51:29 2006
11. Physics: Re: How do you build a touch lamp?, Adrian Popa, Director Emeritus, Hughes Research Laboratories Mon Feb 11 02:11:53 2002
12. Engineering: Re: Is there such a thing as a hovercraft car?, Adrian Popa, Directors Office, Hughes Research Laboratories Tue Oct 12 09:48:04 1999
13. Physics: Re: What would be the effect(s) of putting quartz crystal(s) into a microwave?, Adrian E. Popa, Laboratory Director Emeritus Wed Jun 18 21:59:24 2003
14. Physics: Re: Can you disintegrate a molecule by playing back it's resonating frequency?, Adrian E. Popa, Laboratory Director Emeritus Sat Jan 22 16:58:10 2005
15. Physics: Re: How is Nd:YAG prepared?, Adrian Popa, Directors Office, Hughes Research Laboratories Tue Aug 10 14:42:39 1999
16. Chemistry: Re: Microwaves plastics, and ceramics, Adrian Popa, Directors Office, Hughes Research Laboratories Mon May 22 12:19:43 2000
17. Physics: Re: Why does glass shatter in the microwave?, Adrian E. Popa, Retired Laboratory Director Thu Aug 11 16:39:18 2005
18. Physics: FollowOn 1139487116.Ph (to Mr. Adrian Popa), Nikos, grad (science) Mon Feb 13 01:50:35 2006
19. Chemistry: Re: Oxygen masks in aiplanes, what's the process/reaction?, Adrian Popa, Directors Office, Hughes Research Laboratories Fri Jun 11 12:45:13 1999
20. Astronomy: Re: How do they know where MIR will contact earth? , Adrian Popa, Directors Office, Hughes Research Laboratories Thu Sep 2 10:07:46 1999
21. Engineering: Re: Direction of electrical current & fuses, definition of 'ground', Adrian E. Popa, Retired Laboratory Director Sun Jul 9 13:42:00 2006
22. Physics: Re: Did NEC-Princeton Labs conduct an experiment showing light to travel FTL?, Adrian Popa, Director Emeritus, Hughes Research Laboratories Sun Mar 18 23:37:43 2001
23. Physics: Electrooptically changing refractive index- what is Max %? , John, grad (science) Mon Sep 20 16:11:15 2004
24. Engineering: Re: At what speed does information propagate in fiber optics?, Adrian E. Popa, Retired Laboratory Director Fri Jul 29 21:01:10 2005
25. Engineering: Re: Do you know how i could build a dish that would recieve signals from space?, Adrian Popa, Director Emeritus, Hughes Research Laboratories Tue Jun 5 23:05:16 2001