Is sound part of the electromagnetic spectrum?

Sound is a longitudinal compression wave that is the 'movement' of gas along the direction of the wave. There is no sound in space. read more

That's not so easy. Electromagnetic waves are vibrations of magnetic and electric fields. So they don't need air in order to travel. They don't need anything to be there at all. read more

Since sound waves are longitudinal elastic waves in material media, at the fundamental level they must be fluctuations of the electromagnetic field propagating through matter, thereby making the longitudinal component more prominent than the familiar transverse ones. read more

Electromagnetic waves are waves made of changing electric and magnetic fields. The electric wave part is perpendicular to the magnetic wave part and in phase with it. In a vacuum all types of electromagnetic waves travel at the same speed, c = 2.99 × 10 8 m/s. read more