I Got Your EMF Right Here
Friday September 21, 2007 8:40 AM
EMF meters seem to be the standard tech for professional and amateur ghost hunters. But what do these devices actually do?
The experts at Ghost Gadgets provide an exhaustive explanation of EMF meters for their readers. Typical EMF meters are "AC EMF Meters" and measure changing magnetic fields. Electromagnetic fields can range from 0 hertz and up, varying as you reach the different fields of UV light, x-rays and beyond. Most AC EMF meters are sensitive to frequencies of 30-10,000 hertz. The tool is made of a coil connected to an amplifier; a changing magnetic field will cause a tiny AC voltage to flow through the coil. The voltage is amplified to create an analog signal, which is sent through filters and shot back out as a reading in milliGauss (mG) or other units.
AC EMF meters can be frequency weighted (most common) or non-frequency weighted. Frequency weighted meters will give you the strength of a magnetic field proportionate to the way the human body experiences it. This is useful for detecting "haunt phenomena." Non-frequency weighted meters give a true field strength reading, useful for lab settings and testing. Experts recommend using both simultaneously.
So do EMF meters truly measure ghost and paranormal phenomena? Some folks chalk up the movements on EMF meters to a host of "normal" activity, like electrical equipment, moving metals, and even regular magnets. But others contend that careful analysis, and the use of different meters together (frequency-weighted and non-frequency-weighted) can point to true paranormal entities.
Comments (1)
hello it useful ıs ıt used for searchıng treasure hov many metres of area does it take does ıt serch the area hov much does it cost prıces sınceley
Posted by hanifi | April 2, 2008 12:32 PM
Posted on April 2, 2008 12:32