This week we will be talking about an EMF detector.  EMF stands for electromagnetic field, which this device detects and measures. This is a device we use on our investigations, often to debunk the existence of the paranormal.  Ghosts are said to be made up of energy and matter, and so, if a ghost is present the EMF detector is presumed to go off.  This device can also pick up electronic devices and power sources (a microwave in use, for example).  Sometimes we can debunk a reading as non-paranormal if there are electrical devices present, and the readings increase as we get closer to it.