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  2. EMF measurement - Wikipedia

    en.wikipedia.org/wiki/EMF_measurement

    An EMF meter is a scientific instrument for measuring electromagnetic fields (abbreviated as EMF). Most meters measure the electromagnetic radiation flux density (DC fields) or the change in an electromagnetic field over time (AC fields), essentially the same as a radio antenna, but with quite different detection characteristics.

  3. List of equipment of the Philippine Army - Wikipedia

    en.wikipedia.org/wiki/List_of_equipment_of_the...

    14. 4. Former Belgian Land Component M113A1B upgraded to M113A2+ standard, integrated by Elbit Systems with turret and 76mm L23A1 gun from decommissioned FV101 Scorpion CVR (T). There are also a few M113A1 armed with the 76mm L23A1 gun and turret, but was done in-house by the Philippine Army. Infantry fighting vehicles.

  4. Ghost hunting - Wikipedia

    en.wikipedia.org/wiki/Ghost_hunting

    Ghost hunting is the process of investigating locations that are purportedly haunted by ghosts. The practice has been heavily criticized for its dismissal of the scientific method. No scientific study has ever been able to confirm the existence of ghosts. [1] [2] Ghost hunting is considered a pseudoscience by the vast majority of educators ...

  5. Extremely low frequency - Wikipedia

    en.wikipedia.org/wiki/Extremely_low_frequency

    The World Health Organization (WHO) have used ELF to refer to the concept of "extremely low frequency (ELF) electric and magnetic fields (EMF)". [17] The WHO also stated that at frequencies between 0 and 300 Hz, "the wavelengths in air are very long (6,000 km (3,700 mi) at 50 Hz and 5,000 km (3,100 mi) at 60 Hz), and, in practical situations ...

  6. Radio-frequency identification - Wikipedia

    en.wikipedia.org/wiki/Radio-frequency_identification

    Radio-frequency identification ( RFID) uses electromagnetic fields to automatically identify and track tags attached to objects. An RFID system consists of a tiny radio transponder called a tag, a radio receiver, and a transmitter. When triggered by an electromagnetic interrogation pulse from a nearby RFID reader device, the tag transmits ...

  7. List of equipment of the Philippine Air Force - Wikipedia

    en.wikipedia.org/wiki/List_of_equipment_of_the...

    This is a list of equipment used by the Philippine Air Force (PAF), the branch of the Armed Forces of the Philippines that specializes in aerial warfare. It covers active equipment, such as aircraft, ordnances, air defenses, and retired aircraft inventory. PAF has made use of its existing equipment to fulfill its mandate while modernization ...

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