Here are some useful links !
AMERICAN PHYSICAL SOCIETY(APS):
Promotes the advancement and diffusion of the knowledge of physics and
all branches of fundamental and applied physics
APS Web Address: http://www.aps.org
OPTICAL SOCIETY OF AMERICA(OSA):
Devotes itself to the advancement of optics, pure and applied, in all
its branches.
OSA Web Address: http://www.osa.org
ACOUSTICAL SOCIETY OF AMERICA(ASA):
Seeks to increase and diffuse knowledge of acoustics and to promote its
practical applications
ASA Web Address: http://www.asa.aip.org
THE SOCIETY OF RHEOLOGY(SoR):
Promotes the advancement and applications of rheology, the science of
deformation and flow of matter, and its applications.
SoR Web Address: http://www.umecheme.maine.edu/sor
THE AMERICAN ASSOCIATION OF PHYSICS
TEACHERS(AAPT) :
Promotes the understanding and appreciation of physics through teaching.
AAPT Web Address: http://www.aapt.org.
AMERICAN CRYSTALLOGRAPHIC
ASSOCIATION(ACA):
Promotes the study of the arrangement of the atoms in matter, its
causes, itsnature, and consequences, and the tools and the methods used
in studies
ACA Web Address: http://www.hwi.buffalo.edu/aca
AMERICAN ASTRONOMICAL SOCIETY(AAS):
Promotes the advancement of astronomy and closely related branches of
science.
AAS Web Address: http://www.aas.org
AMERICAN ASSOCIATION OF PHYSICISTS IN
MEDICINE(AAPM):
Seeks to promote the application of physics to medicine and biology.
AAPM Web Address: http://www.aapm.org
AVS- THE SCIENCE AND TECHNOLOGY
SOCIETY:
Promotes communication and disseminates knowledge in vacuum science,
technology and engineering.
AVS Web address: http://www.vacuum.org
AMERICAN GEOPHYSICAL UNION:
Promotes the scientific
study of the earth and its environment in space.
AGU Web Address: http://www.agu.org