Physics Overview - Preparation - Specialty Areas - Day In The Life - Earnings - Employment - Career Path Forecast - Professional Organizations  Specialty Areas The following are descriptions of several focus areas of physics:       Acoustics       Astronomy       Astrophysics       Atmospheric Physics       Biophysics       Chemical Physics       Cryogenics       Crystallography       Electromagnetism       Energy       Engineering       Environmental Physics       Fluid Mechanics       Geophysics       Materials Science       Medical Physics       Metallurgy       Molecular Physics       Nuclear Physics       Oceanography       Optical Physics       Particle Physics       Plasma Physics       Rheology       Solid State Physics       Space Physics       Thermal Physics       Vacuum Physics