A World War I acoustic mirror that alerted The British when zeppelins attacked - Image by Paul Glazzard

The science of waves, subcategories include acoustic propagation, biomedical acoustics and nonlinear acoustics


  • Acoustic applications - the uses of acoustic transmissions
  • Acoustic devices - devices for amplifying or transmitting sound
  • Acoustic waves - oscillations of pressure that travel through solids, liquids, or gases in a wave pattern
  • Acoustooptic effects - the diffraction of light by sound, based on the change of the refractive index of a medium due to the presence of sound waves in that medium
  • Biomedical acoustics - the study of the use of sound, such as ultrasound technologies, for medical purposes
  • Nonlinear acoustics - the study of loud amplitude sound waves that are distorted as they travel
  • Spectral shape - the shape of a piece of acoustic spectrum
  • Underwater acoustics - also known as hydroacoustics, the study of the propagation of sound in water and of the interaction of sound waves with the water and its boundaries