 However, this point deserves closer attention. For sometimes sounds do seem to fill space. Thunders seem to. This is a case in which the only vibrating entity is the medium. Nonetheless this case too can be accommodated by the Located Event Theory: what we hear is sudden heating of air due to the electric discharge, whose impact is confusedly propagated by the medium. A portion of air (the portion that is suddenly heated up) is the vibrating object and another portion is the transmitting medium.