Sound

Sound is a pressure disturbance that moves through a medium in the form of mechanical waves.

• Introduction to Sound
• Sound and Vibration

The speed of sound is different than the speed of an EM wave.

• Sound Wave Propagation
• Sound Propagation in Elastic Materials
• Modes of Sound Wave Propagation
• The Speed of Sound in Air
• The Speed of Sound in Other Materials
• Temperature and the Speed of Sound

The different components and parameters of a sound wave affect how we hear it.

• The Human Ear
• The Components of Sound
• Frequency and Pitch
• The Doppler Effect

Sound waves are affected by the medium they are in and interact with boundaries between mediums.

• Acoustic Impedance
• Sound Wave Interference
• Refraction of Sound
• Reflection of Sound