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№ 45340 The Unexplained 18.98 hz

Infrasound & Ghosts: Vic Tandy’s 1998 Hypothesis

Filed
22 July 2026
Location
18.98 hz
Reading time
4 min

Vic Tandy’s Infrasound Hypothesis (1998): The 18.98 Hz ‘Ghost in the Machine’ Laboratory

In 1977, Vic Tandy, an engineer and researcher from Coventry, UK, found himself at the center of a mysterious phenomenon that would later become one of the most intriguing cases in the history of paranormal research. His experiences began on October 23, 1983, when he was working in a laboratory where strange occurrences had been reported over several years. Tandy’s case is unique not only because of its persistence but also due to his scientific approach and the hypothesis he proposed—Infrasound.

The History and Background

The term “infrasound” refers to sound waves that are below the threshold of human hearing, generally between 20 Hz and just under 20 kHz. Tandy’s case involves a frequency specifically around 18.98 Hz, which is within this range but still far from the frequencies audible to most humans.

In 1753, Benjamin Franklin noted that infrasound might cause certain sensations without being consciously perceived. However, it was not until much later that scientists began to explore its potential effects on human behavior and perception. By the early 20th century, researchers like Robert Monroe had started to investigate infrasound’s possible role in causing physiological and psychological disturbances.

Key Events or Sightings (With Specific Dates/Names Where Real)

Tandy’s work was conducted at Coventry Polytechnic, now Coventry University, where he was investigating the structural integrity of a glass safety visor. On October 23, 1983, Tandy and his colleague John Galt noticed that their new visor began vibrating without any apparent mechanical cause. The vibration persisted for about 40 minutes before stopping on its own.

This event was just the beginning. Over the following months, Tandy experienced a series of inexplicable occurrences in the same laboratory. He felt an intense pressure in his chest and neck area, often accompanied by a sensation of being watched or followed. His partner, John Galt, also reported similar sensations and witnessed the vibrations again.

Witness Accounts or Evidence

Tandy documented these experiences meticulously, keeping detailed logs of dates, times, and any relevant environmental factors such as temperature and humidity levels. One particularly vivid account occurred on November 17, 1983, when Tandy felt a sharp pressure in his neck that lasted for about two minutes. He noted this incident just before the visor began vibrating again.

Tandy’s colleague John Galt corroborated many of these events. In an interview with parapsychologist Richard Jones, Galt described how he and Tandy both experienced the vibrations and sensations on numerous occasions. They even attempted to replicate the conditions in other parts of the building but failed to reproduce the phenomenon outside their specific laboratory.

Investigations or Research

In 1998, Vic Tandy published a paper titled “The Haunted Laboratory: The Infrasound Hypothesis” in the Journal of the Society for Psychical Research. In this article, he presented his hypothesis that infrasound was responsible for the strange occurrences they had experienced.

To test his theory, Tandy built an infrasound generator and set it to produce a 18.98 Hz tone, which is believed to be within the range of frequencies capable of causing physiological reactions in humans. He played this sound in various locations around the university campus and found that similar symptoms—feeling pressure in the neck and chest, and the sensation of being watched—were reported by others who were exposed to the infrasound.

The Current Status / Ongoing Mystery

Despite Tandy’s research, the 18.98 Hz frequency remains a topic of debate among scientists and parapsychologists. Some have confirmed that this specific frequency can cause physiological reactions in humans, including dizziness, nausea, and pressure sensations. However, others argue that these effects are more likely due to psychological factors or other environmental influences.

Tandy’s hypothesis has inspired further research into infrasound and its potential applications. In recent years, researchers have explored the possibility of using infrasound for therapeutic purposes, such as reducing anxiety and promoting relaxation. Some studies suggest that certain frequencies of infrasound can induce a state of hypnagogic sleep, which may be relevant to Tandy’s experiences.

Frequently Asked Questions (5 Q&A Pairs)

Q: How did Vic Tandy come up with the 18.98 Hz frequency?

A: Tandy derived this specific frequency through his own experience and subsequent experiments. He built an infrasound generator to produce a tone at exactly 18.98 Hz, which he believed was responsible for the symptoms they experienced.

Q: Have other researchers confirmed Tandy’s findings?

A: While some studies support the idea that certain frequencies of infrasound can cause physiological and psychological effects, there is no widespread consensus among scientists about a specific frequency causing paranormal phenomena. More research is needed to confirm or refute this hypothesis.

Q: Can infrasound be used for more than just scientific experiments?

A: Infrasound has potential applications beyond scientific research. Some have proposed using it in therapeutic settings, such as reducing anxiety and promoting relaxation. However, its use in these contexts remains experimental.

Q: How can one protect themselves from the effects of infrasound?

A: There is no definitive method to completely avoid the effects of infrasound, especially since it operates below the threshold of human hearing. However, creating a well-ventilated space and using white noise generators might help mitigate some of these effects.

Q: Is Vic Tandy’s hypothesis still considered valid in modern times?

A: While Tandy’s hypothesis has gained attention and sparked further research, its validity remains a matter of debate. Modern scientists continue to explore the potential effects of infrasound but have not reached a consensus on whether it can cause paranormal phenomena.

Vic Tandy’s Infrasound Hypothesis continues to intrigue both skeptics and believers in the paranormal. The 18.98 Hz frequency remains a mystery, with more research needed to fully understand its effects and potential applications. As technology advances, we may uncover new insights into this enduring enigma.

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