The Science of the Unseen: Bringing Metrology Into the Paranormal

Back in 2004, the show Ghost Hunters premiered on Syfy. The paranormal research team known as TAPS—led by Jason Hawes and Grant Wilson—introduced many viewers to the world of “ghost hunting” for the first time. While psychics and mediums had long been part of pop culture, the TAPS team brought a far more grounded, scientific approach to investigating the unexplained. Gone were the days of séances and Ouija boards; a new era of technological innovation was beginning to shape the future of paranormal study.

As someone who had been fascinated by the paranormal for most of my life, this analytical methodology was eye‑opening. In the show, I saw the potential for paranormal research, cryptozoology, and other fields often dismissed as pseudo‑sciences to gain legitimacy through the scientific method—through careful study, documentation, and measurement of unusual phenomena.

Although TAPS helped bring this idea into the mainstream, they were far from the first to pioneer it. After studying the techniques and tools used by them and others, I found that paranormal researchers are some of the most inventive people you could ever hope to meet. What began in homes and garages with custom‑built REM pods and spirit boxes has grown into a niche industry driven by the demand for tools to study and hopefully communicate with the dead. Whether fueled by the rise of paranormal internet content or a renewed cultural interest in the supernatural, paranormal research seems to be experiencing a renaissance reminiscent of the early 20th century.

Yet here we are, decades later, and many would argue we are no closer to proving the existence of the paranormal—let alone understanding it. With technology that surpasses anything our ancestors could have imagined—instant access to global information, cameras capable of seeing in multiple light spectrums, audio recorders that capture sounds beyond human hearing—you might expect that proof would be easy to find.

Some might say that the lack of definitive evidence is proof that ghosts don’t exist. And perhaps they’re right. But I don’t think it’s that simple. Throughout most of human history, people across cultures have believed in some form of spiritual realm. Some see it as separate from our own; others believe it overlaps with us. Many who study the paranormal do so in search of answers—and in that search, they often have experiences they cannot reasonably explain. Are we to tell them they didn’t feel what they felt or see what they claim to have seen? If belief in the supernatural is resurging and the tools we need are readily available, then what exactly are we missing?

To answer that, we must ask a more fundamental question: What is a ghost? What qualifies something as a paranormal entity? How do we observe the unobservable? Experts in the field have countless theories, but ultimately, we know very little for certain. So how can we begin to understand the unseen world many believe surrounds us?

I believe the answer lies in the scientific method—and specifically in a field I’ve devoted years to studying: metrology.

Metrology is the scientific study of measurement, focused on establishing standardized units and ensuring accuracy. It can be divided into three core activities:

1. Defining units of measurement

2. Realizing these units in practice

3. Traceability—linking practical measurements to reference standards

These activities often overlap, but understanding each one helps us see how they can apply to paranormal research.

First: defining the units of measurement.

This means establishing exactly what we are measuring and the standardized unit that represents it. Time, for example, is measured in seconds, minutes, and hours — each with a precise scientific definition. Height can be measured in feet or meters, which are standardized units that allow anyone, anywhere, to measure the same object and get the same result. Without clearly defined units, no measurement can be meaningful or comparable.

Second: realizing these units in practice.

This is where an abstract unit—like a degree Celsius or a volt—is turned into something measurable in the real world. Instruments must be calibrated so that when they display a value, that value accurately represents the defined unit. For example, when we use a thermometer to track temperature fluctuations in a room, we’re relying on the fact that the thermometer has been designed and calibrated to correctly realize the unit of temperature. When the temperature rises or falls unexpectedly, we can interpret that change because we trust the measurement is tied to a known standard.

Third—and perhaps most important—is traceability.

Traceability means that every measurement can be linked back to a known reference through an unbroken chain of comparisons. In paranormal investigation, this begins with taking baseline readings—such as the normal EMF levels in a location. When we later see spikes, we can compare them to that baseline because the instrument itself has been calibrated to recognized standards. This chain of comparison is what gives our measurements meaning and ensures they aren’t just random numbers on a screen.

So how does this apply to paranormal research? Well, what exactly are we measuring? Are we trying to capture EVPs? Most investigators use a digital recorder—but what if we could calibrate an instrument to be sensitive enough to detect not just sounds beyond human hearing, but the specific frequencies an entity might use to communicate? When using an EMF detector, how much of a spike indicates a presence? What if we could take baseline readings of a location and continuously collect data, creating a detailed map of its electrical environment?

It sounds promising—and it is. With proper training, standardized practices, and verified methods, this approach could transform the field.

If we want to understand the paranormal, we must first learn how to measure it. Metrology gives us the framework to move beyond anecdotes and into reproducible, data‑driven investigation. By defining what we measure, realizing those measurements through calibrated tools, and ensuring traceability to reliable standards, we can finally begin to separate noise from evidence.

This series will explore how these principles can reshape paranormal research and help us build a foundation for true scientific inquiry. If that journey interests you, stay tuned for the next installment.