" Infrasound and resonance may play an even bigger role in the paranormal than EMF because everything vibrates, all the way down to the subatomic level, and everything has its own signature resonant frequencies. We are ultra sensitive to shifts and changes in not only our own natural resonant frequencies, but also those in our immediate environment. How many times have you gotten a “good vibe” off of someone you share things in common with? Solar activity, geomagnetic storms, and the phases of the moon also affect ghost activity. We know that spirits needs energy to manifest, so it would stand to reason that when the air is charged with electricity (like after a lightning storm or during a solar flare) they have more opportunity to gather strength to be seen or heard. "

― Zak Bagans , Dark World: Into the Shadows with the Lead Investigator of The Ghost Adventures Crew