Physics and Astronomy Forums (Popularity: ): A series of different threaded forums for discussing famous people as well as topics related to astronomy and astrophysics. Theoretical Physics (Popularity: ): Archives of an discussion group for discussing related topics. Physics Forums (Popularity: ): Bulletin boards on physics and related subjects. Includes related polls and a list of active threads. Advanced Physics Forums (Popularity: ): Intended primarily for physics majors, graduate students, postdocs and faculty. Get meeting information, theoretical and research information and exchange of ideas. Meant for the physics community throughout the world. Groupsrv.com - Physics Forum (Popularity: ): Discussion for scientists. PhysOrg Discussion Forum (Popularity: ): Applied physics, nanotechnology, quantum physics, and semiconductor technology. Also discussions of the latest physics news. InstaEDU, Inc. (Popularity: ): Learning should be personal - which is why InstaEDU helps you work with a real person over video chat. Within minutes, you'll be connected with a subject expert who can ...