• Magnetic Monopole
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    Magnetic Field:
    The field of force that surrounds a magnet (in the same way as an electric field is the field of force that surrounds an electric charge). Together, the magnetic and electric fields make up the electromagnetic field which underlies light and other electromagnetic waves, and changes in either field will induce changes in the other, as indicated by James Clerk Maxwell’s Equations of Electromagnetism.

    Magnetic Monopole:
    A hypothetical particle that is a magnet with only one pole, and which therefore has a net magnetic charge. Although the existence of monopoles is indicated by both classical theory and quantum theory (and predicted by recent string theories and grand unified theories), there is still no observational evidence for their physical existence.

    Mass:
    A measure of the amount of matter in a body. It can also be seen as a measure of a body’s inertia or resistence to change in motion, or the degree of acceleration a body acquires when subject to a force (bodies with greater mass are accelerated less by the same force and have greater inertia). Mass is often confused with weight, which is the strength of the gravitational pull on the object (and therefore how heavy it is in a particular gravitational situation), although, in everyday situations, the weight of an object is proportional to its mass.



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