Superluminal energy transmission in the Goos-Hanchen shift of total reflection

► We give an example that energy can travel faster than light for the first time. ► Only energy flow velocity can play the role of the velocity in mechanics. ► The group velocity and others are unqualified but happens to be equal sometimes. ► This counter example of SR is helpful to study tachyons of particle physics. ► It is also useful to explain superluminal motion observed in astronomy, etc.