The Optical Society
2010 Massachusetts Ave, NW
Washington, DC 20036 USA
Tel: +1 202.223.8130
http://www.osa.org
To join: http://www.osa.org/join/ |
American Physical Society
Headquarters
One Physics Ellipse
College Park, MD 20740-3844
Tel: +1 301.209.3200
http://www.aps.org/
To join: http://www.aps.org/membership/join.cfm |