The magnetic field of a bar magnet is strongest at either pole of the magnet . It is equally strong at the north pole when compared with the south pole. The force is weaker in the middle of the magnet and halfway between the pole and the center.
Read moreDo humans have electromagnetic fields?
Electromagnetic fields can be both natural and made by humans . Natural electromagnetic fields are present in the Earth. While they may be invisible, electrical fields are based on the build-up of electric charges in the environment. These electric fields are commonly associated with thunderstorms.
Read moreWhat is ELF used for?
Abstract. Extremely low frequency (ELF) electromagnetic waves are currently the lowest frequency waves used routinely for wireless communication .15 Nis 2003
Read moreWhat is the use of extremely low frequency?
ELF fields are generally used for power utilities (transmission, distribution, and applications) and for strategic global communications with submarines submerged in conducting seawater .
Read moreWhat is the frequency of gamma rays in GHz?
Gamma rays are the highest energy EM radiation and typically have energies greater than 100 keV, frequencies greater than 10 19 Hz , and wavelengths less than 10 picometers.
Read moreHow do you make a THz frequency?
Broadband terahertz pulses can be generated by exciting THz-PCAs with a femto-second short pulse laser . Using a femto-second laser with ~ 100 fs optical pulse duration, terahertz pulses with their frequency content extended up to around 5 THz and an average power of a few μW can be achieved.
Read moreWhat frequency is THz?
Terahertz (THz) is a unit of measure of frequency that is equal to 1 trillion hertz (1012 Hz) . It usually refers to the frequency of an electromagnetic wave, which is a part of the electromagnetic spectrum invisible to the naked eye that lies in between the microwave and the infrared range.
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