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In certain cases of hauntings and apparitions, some kind of local imprint, on material structures or places, has been left by some past events occurring to certain persons, who when on Earth, lived or were closely connected with that particular locality; an echo or phantom of these events becoming perceptible to those now living.A major problem with the Stone tape theory has always been that there is no satisfactory explanation as to how or why such a recording could take place or how the solid structure and fabric of a location is able to store information about events that took place previously. Researchers have suggested that somehow iron oxide (rust) particles within the structure or local environment might behave like the iron oxide particles used to store information on video and audio tape. Initially, this sounds like a promising explanation until the mechanism of tape recording is considered:
A complicated electro-mechanical mechanism is needed to ensure that the tape is passed through a powerful variable electro-magnetic field which changes the magnetisation of the iron oxide particles coated onto the tape thus storing the sounds & images as a series of magnetic fields. A further complex mechanism is needed to 'read' the stored magnetic fields and return them to a form we can watch or listen to. How any stone recording could be played back and influence later witnesses without this complex machinery makes the stone tape idea almost unworkable.
However, a possible hypothesis has emerged that may well explain how an environmental recording might work and it is supported by some scientists. The answer could lie in a substance that is a part of just about every location where ghosts are to be found - common water! Water it appears from research being undertaken may even be capable of recording both human thoughts & emotions.
The notion that water might be able in some way to the record emotions or impressions of past lives is itself not a new one. In the early 1960's Archaeologist and later psychical researcher T. C. Lethbridge together with his wife had a series of powerful experiences of "depression and fright" whilst walking close to a small stream on the beach at Ladram bay, Devon. He discovered that a suicide had taken place at the site some years before. Further research and experiences at other sites associated with water lead him to develop a theory that the water was able to record strong human emotions and that these may later affect subsequent visitors to the site.