Resonance Reversal

A Resonance Reversal is the process of closing a dimensional rift created by a Resonance Cascade.

Overview
Resonance Cascades are created artificially but sometimes by accident. To fix a rift created by one you must undergo a resonance reversal. This is done by  resonating the same object/material with a negative resonance frequency. This somehow causes the rift to be forced shut. Some small resonance cascades will shut by themselves as they are so small. If Plasma Domes need to be shut down or move a resonance reversal is necessary otherwise the rift could widen then it would be harder to shut.

The Legoland Incident
During the Legoland Incident a resonance reversal was tried but it failed. This was because a being on the other side of the of the rift was keeping it open. It is unknown how this was done. After killing the being the rift between Legoland and Xen was shut.

Trivia

 * Based on Halflife and Halflife Decay
 * Only really seen in The Legoland Incident episode
 * This event is fictional