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Electric charge is a fundamental property of matter. Matter is made up of electrons, neutrons, and protons. Electrons have a negative electric charge, while protons have a positive electric charge; neutrons have no electric charge. These tiny particles are the building blocks of atoms. An atom has a net positive or electric charge when it loses one of its electrons or gains an extra electron. On the other hand, magnetic charges do not exist - Magnetic fields are generated solely by moving electric charges. An example of the relationship between magnetism and electricity is the Lorentz Force. The most significant relationship between electricity and magnetism is light, is knownto physicists as an electromagnetic wave. Light waves are oscillating patterns of electric and magnetic fields, propagating through space at the speed of light. Light is the best known example, but microwaves, radio waves, X-rays, infrared and ultraviolet light are also electromagnetic waves. Electric and Magnetic phenomena are intricately described by a collection of physical laws, known as Maxwell's equations.
The Philadelphia Experiment In
1943, an experiment was conducted upon a small destroyer escort ship
during World War II, both in the Philadelphia Naval Yard and at sea;
the goal was to make that ship invisible to enemy detection. It was
also claimed that the Philadelphia Experiment was partly an investigation
into how Albert Einstein's "Unified Field Theory for Gravitation and
Electricity" might be used to advantage in the development of electronic
camouflage for ships at sea. It is believed that the mechanism involved
was the generation of an incredibly intense magnetic field around the
ship, which would cause refraction or bending of light or radar waves
around the ship.
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