PHYSICS Lecture Notes - Radiography, Refraction, Diffraction
Document Summary
Perturbation, in turn, is the displacement of a physical system from its equilibrium position and propagates carrying energy. Waves are capable of transmitting energy without transmitting matter. Mechanical: these are waves that are subjected to a material medium for their influence, that is, they do not propagate in a vacuum. Example: when we play the violin, we hear the sound at the moment when the bow strains the strings. These waves propagated because there was air between the instrument to move, that is, there was a type of matter. Electromagnetic: waves that do not suffer from matter to propagate. Example: x-rays and light do not need matter to propagate. Longitudinal: when the disturbance and manifestation occur in the same direction. Transverse: when the disturbance occurs in one direction and the forced one is perpendicular to it. Example: electromagnetic waves, because electric and magnetic fields are perpendicular to the direction of modulation.
