s***e
发帖数: 911 | 1 Evanescent modes are not necessarily Einstein causal
Nimtz, G.
Previously, experiments with microwave signals have shown that evanescent
modes can travel faster than light. Several theoretical investigations have
proven that in the case of signals with unlimitedly high frequency components,
such superluminal vel ocities do not violate Einstein causality, thus group,
signal, and energy velocities are
light. In this letter I shall show that frequency band l |
|
