For most paranormal investigators, electromagnetism is just something that is associated with EMF meters, a popular ghost hunting gadget that picks up electromagnetic fields. However, the frequency range that these devices are sensitive to is actually tiny, and they are only measuring a small fraction of the electromagnetic spectrum.

EMF meters are only sensitive to the electromagnetic fields generated by electrical devices, but the whole spectrum is made up of various types of radiation, including visible light, x-rays, radio waves, and even the heat generated by things like your oven.

The types of radiation that occur in different parts of the spectrum have different uses and dangers, depending on their wavelength and frequency. Radio waves have the lowest frequencies and longest wavelengths, while gamma waves have the highest frequencies and shortest wavelengths.9Only a very small portion of the EM spectrum is visible to the human eye in the form of white and...