Electromagnetic Shangri-la Traditional Cache
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Electromagnetic Shangri-la
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Difficulty:
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Terrain:
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Size: 
(small)
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A quick roadside cache hidden with urban camo.
Electricity current delivered through power lines can be used to light and heat homes, prepare food, power computers and operate machinery and appliances, such as televisions and refrigerators. In Canada, appliances use electric current that flows back and forth at a frequency of 60 cycles per second (60 hertz).
When you use electricity and electrical appliances, you are exposed to electric and magnetic fields (EMFs) at extremely low frequencies (ELF). The term "extremely low" describes any frequency below 300 hertz. EMFs produced by the transmission and use of electricity belong to this category.
Electric and Magnetic Fields (EMFs)
Electric and magnetic fields are invisible forces that surround electrical equipment, power cords, and wires that carry electricity, including outdoor power lines. You cannot see or feel EMFs.
Electric Fields: These are formed whenever a wire is plugged into an outlet, even when the appliance is not turned on. The higher the voltage, the stronger the electric field.
Magnetic Fields: These are formed when electric current is flowing within a device or wire. The greater the current, the stronger the magnetic field.
Electric and magnetic fields can occur separately or together. For example, when you plug the power cord for a lamp into a wall socket, it creates an electric field along the cord. When you turn the lamp on, the flow of current through the cord creates a magnetic field. Meanwhile, the electric field is still present.
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