These little devices can detect all different types of energy which may include the detection of spirits and spirit energy. Every living animal emits some kind of electro magnetic frequency. All electronic devices emit some kind of eletrco magnetic frequency. Though you can not see it, your computer monitor is currently bombarding you with EMF as you read this webpage.EMF detectors need to be used with care and are a complimentary device and not something to base your entire investigation on.
The human body uses electrical pulses to carry signals from one part of your body to the next. In order for your finger to click the mouse button, the brain must send a signal down to the finger to drive the muscle for clicking. These energy pulses are traveling through the body at an alarming rate and can be detected by an EMF detector if it is sensative enough. Energy for the most part, stays withing its own electrical system (the body) but some does escape. It is believed that once the body dies, this energy is released (the soul) and since the body is no longer dampening the energy, the radiation would be much stronger and give EMF detectors the ability to detect its existance.
EMF spikes can be caused by paranormal activity, but can also be caused by natural phenomenons or even man made frequencies that just happen to be bounced your way. For instance... you are investigating in an old warehouse in the middle of a large town or small city in the middle of the night, the warehouse has no electricity and the only device on and running is your EMF detector and a flashlight. You are perusing the scene whenn all of a sudden it spikes to 7 and hangs there for 5 seconds then fades back to 0. Obviuosly this has to be a paranormal event, there is no electricity on in the place and thes only devices going is your EMF detector and a flashlight. Unfortunately this can also be a man made phenomenon and the source would be difficult to track down. Activity such as this can be caused by a large object like a mac truck sitting at a redlight which is bouncing radio waves in your direction off the side of the trailer for the 5 seconds while its sitting at a stop sign 2 blocks away.
Ever since Sony introduced its first Night Shot camcorder in the late 90's, many other camcorder manufacturers have followed suit and produced some kind of 0 lux camcorder with infrared pickup. The ability to see in near total darkness used to be something only the Armed Forces and FBI could do. Now for a few hundred dollars, any one can!
This little achievment has made ghost investigations much easier, unfortunately the sad part about this whole indevor is that infrared pickup by a camcorder is not really anything new and just about any camcorder with CCD technology has the ability to pickup infrared light with a little modification and the addition of an infrared light.
The picture above is your basic CCD (Charge Coupled Device). You can find these in Camcorders, Digital Cameras, Web Cams and other imaging devices. Its main function is to take light reflected back from objects and turn it into an electrical signal which is then processed by a microprocessor to reproduce the image on a viewing device (computer screen, the little screen on your digital camera, recorded to a video tape, etc...).
A CCD device can see light rays outside of the human visible spectrum. The chart below will give you an idea of just how far a CCD unit can see above the visible light the human eye can see. infrared light does not reflect light the same way visible light is reflected which causes problems with color, so most camcorders have some kind of infrared filter in front of the CCD unit. Even the Sony Night shot incorporates an infrared filter. When switched to night shot mode, the filter is moved to the side to allow the infrared light to pass through to the CCD. Since infrared light reflects at a different wave length and is not refracted to the same degree visible light is, could it be possible that infrared light is reflected from spirits?
Another theory is that since the CCD works on electrical pulses that somehow the CCD is detecting the electrical disturbance being emitted by the spirit(s).
EMF Detector
Hand-Held Camcorder
Audio recording devices are another media for capturing paranormal activity. EVP or Electronic Voice Phenomenon is gaining popularity among ghost hunters. With the introduction of Digital recording devices, EVP is easier to catch and the quality of the recording gives way to easily deciphering voices and phrases that may have been detected.
Audio recording is not a very difficult process, a simple needle traveling across a piece of tin foil can be used as a recording device, much like the very first device created by Thomas Edison. Of course the sound quality is extremely poor and the media would only last a few playbacks, but looking at the raw nature of recording sound may help explain why EVP is possible.
Sound in its simplest form is nothing more then a series of vibrations which are picked up by the ear, these vibrations travel down the ear canal where they strike the ear drum causing it also to vibrate, these vibrating pulses are registered by the brain and deciphered into the different sounds that we hear. Audio recorders work much the same way using a diaphram in a microphone to capture the vibrations and record them onto some kind of media. When the audio is played back, the entire process is reveresed causing a speaker to vibrate in specific patterns to re-create the sound that was recorded.
Since audio devices record vibration it may be possible that the spirit energy is emitting the correct vibration to produce words and phrases on the recording device. Or it could be possible that the energy bypasses the microphone and is picked up further in the circuit where the vibration is turned into an audio signal, much like the bleed over of a strong radio station onto a nearby frequency.
So if the spirit is emitting vibrations, why might I not hear it?
Audio recording devices need to amplify the incoming vibrations many thousands of times before recording the vibration to the media. It may be that we are hearing it but just not registering because the vibration is just to week, or maybe the spirit energy is actually focusing on the audio device? Tis one of the questions that is yet to be answered :)
Most audio recorders have the ability to detect vibrations well above the human hearing range in the ultrasonic spectrum. It may also be possible that some of these voices are in the ultrasonic range and can only be heard once the recording is played back.

Digital Audio Recorders
K-II Meter
EMF detector capable of measuring various levels of EMF up to 20+mG. WHY WE USE IT: Hand held EMF detectors are good for getting a base read and measuring changes in fields while on the move. The customized K-II meter allows us to place the unit in a spot away from investigators and still measure changes (via the light display). The K-II also sports a much higher range of field measuremnt (most hand held analog meters have a max. range of only 5~10mG, while this unit can measure changes exceeding 20mG). A great tool to prompt responses to questions by asking an entity to interact with it.
A Closed Circuit Television system is used to record in daylight or full darkness to catch activity. Using our multi-camera DVR setup allows us to record multiple spaces without having to be in those spaces at all times during an investigation This helps to catch things that may not present itself with us around, and also allows us to monitor a large amount of space with fewer investigators. It is also common theory that an entity may only be visible in certain light spectrums, such as infrared (the type used in this technology).
CCTV Dvr System
MEL Meter
The meter was designed with paranormal research in mind by Gary J. Galka of DAS Distribution and marketed through Pro Measure. The meter is named after Gary's eldest daughter Melissa who passed away in 2004.
Gary's intuitive approach to designing the meter shows heavily in its range of features and it's also great to see that development is ongoing as new ideas are incorporated into updated models.
Although technically NOT the only instrument on the market able to simultaneously monitor EMF and temperature (many data loggers can do so with a range of sensors), it is without doubt the first to do so at such a low cost. But as far as dedicated EMF meters go, this is a first! The cost together with the fact the meter satisfies many of the paranormal investigator's "wants" in a EMF meter, assures this will become one of the most popular units on the market.
The unit is rated to measure the EMF band from 30Hz to 300 Hz.
Most EMF meters including the the Mel-8704 and K-II meters monitor within this band but manufacturer specifications state the Mel-8704 will monitor between 30Hz-300Hz (the full SLF range), while the K-II is said to monitor upwards from 50Hz (mains power frequency). Experience shows that the K-II may respond to various other frequencies but attempts are made with the Mel-8704 to reduce "false positive" detections outside the stated range by grounding and shielding components.
The large backlit LCD display is a huge plus and whilst a momentary switch would be considered the norm, the manufacturer has used a permanent type so you can have the back light on as long as you need.
The unit also includes a burst mode for EMF measurement. This essentially changes the viewable sampling time of approximately once per second to around twenty times per second. This is achieved by utilizing all of the processors speed to keep the LCD refreshing, giving a super fast response not usually seen on digital meters. Although this is at the expense of simultaneous temperature measurement, this is a much welcomed addition.
In order to keep up with such a fast response another feature becomes useful. The unit can be set to record so it retains the maximum and minimum readings encountered. This may be used in normal (EMF and temp) or burst mode (EMF only), providing yet another highly desirable feature.

IR (Infrared) Thermometers allow us to gauge the temperature of a space quickly and accurately, without having to actually touch or manipulate the surfaces around us. A common theory of paranormal investigators shows that an entity can attempt to draw from ANY energy source, including heat, to manifest itself.
IR Thermometer
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