Recent content by tbfranks

ok, but when the waves are focusing on the material, it is nothing to vibrate? oscillation must permenacer awhile before the damping is not it? Where does this energy? thanks

Hello everybody! I have an question, that seems silly, but i really need know that. When a material is subject to waves, he starts to oscillate in the frequency of the wave and this material becomes a source of secondary waves, this justifies including the reflection process of the waves...