From www.ehow.com First you will need to know what direction North is. The compass point is affected by magnetic fields. The theory is that paranormal
{"Image DocumentName": "How Do We Use a Compass for Paranormal Research", "Image ImageDescription": "From  The compass is a traditional EMF detector. First you will need to know what direction North is. The compass point is affected by magnetic fields. The theory is that paranormal activity changes the magnetic field\u2014changing true North. This makes the compass the precursor of the EMF meter. Learn to use the compass in a not haunted site, first. Use only compasses with free-swinging needles. If the needle tends to get stuck pointing in one direction, it s not helpful.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}