Earlier, the power of a magnet was only measured in units of gauss. Gauss defines the number of lines of magnetic (flux density) per square centimetre emitted from the surface of the magnet. Today, it is measured in gauss-oersted energy units (GOe). While gauss refers to the number of lines of flux emitted from a magnet, oersted is the unit of measurement that defines the distance of the power of the flux which extends from the surface.
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Here is a nice poem by Prasoon Joshi. The poem is a metaphor for a …