How does light travel through an object?

traveling of light depends the characteristics of the object. If it is opaque or if it is a black body, light doesn't travel. similarly if it is transparent it easily gets into it.during the period of travel it changes its velocity. traveling of light depends the characteristics of the object. If it is opaque or if it is a black body, light doesn't travel. similarly if it is transparent it easily gets into it.during the period of travel it changes its velocity.