Before revision: Special, low loss case For small losses and high frequencies, the general equations can be simplified: If and then Since an advance in phase by is equivalent to a time delay by , can be simply computed as Heaviside condition The Heaviside condition is a special case where the wave travels down the line without any
After revision: Special, low loss case For small losses and high frequencies, the general equations can be simplified: If and then Since an advance in phase by is equivalent to a time delay by , can be simply computed as Heaviside condition The Heaviside condition is .