(Often called diffraction zone.) May be used for any region that would not be illuminated by a given source of electromagnetic (or acoustic) radiation if it propagated strictly according to ray optics [..]

The Shadow zone is an alternate dimension outside the main reality. Its existence means that anyone trapped within it is unable to interact with normal space as they are out of phase and seemingly encased in a limited amount of space.
It is especially used as a euphemistic expression of death. It is referred as a dark other dimension,
surrounded by purple fog. A place where you can be banished to decay. Shadow zone is a realm seen by entities with higher sentience.

Generally, an area of the Earth from which waves do not emerge or cannot be recorded. In seismology, the term is used to more specifically describe regions of the subsurface where P-waves and S-waves [..]

A region 100º to 140º from the epicenter of an earthquake in which, due to refraction from below the core-mantle boundary, no direct seismic waves can be detected.

The shadow zone is the area of the earth from angular distances of 104 to 140 degrees from a given earthquake that does not receive any direct P waves. The shadow zone results from S waves being stopp [..]

an area on Earth's surface where no direct seismic waves from a particular earthquake can be detected

Shadow Zone is the third album by the band Static-X, released on October 7, 2003. Marked by many personnel and stylistic changes, the album sports a much more melodic sound than any other work in thei [..]

A seismic shadow zone is an area of the Earth's surface where seismographs can only barely detect an earthquake after its seismic waves have passed through the Earth. When an earthquake occurs, seism [..]

Shadow Zone is the ninth studio album released by the heavy metal guitarist Axel Rudi Pell, as well as the second album released by the current line-up. The album was released in 2002 by SPV.

Shadow Zone is a series of 13 children's horror fiction books written in the 1990s by several authors using the pen name J. R. Black. Each book is a different story, with new characters. A child or a [..]

a region of low sound intensity that sound waves traveling away from a source in the ocean do not reach, usually because the sound waves are refracted away from that region