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When further surveys using earth resistance, ground-penetrating radar and electromagnetic induction came to naught, the team made what was literally a last-ditch effort beyond the arc and uncovered four distinctive socket-shaped pits from which standing monoliths had been removed.

In the 19th century, Michael Faraday established the basis for the concept of the electromagnetic field in physics, and discovered benzene; the principles of electromagnetic induction; and the laws of electrolysis.

It turns out it has a lithium core, an electromagnetic induction node, and a contour spring!

The ultimate goal is to spin an assembly of magnets in a generator which will, well, generate voltage in a coil of wire thanks to electromagnetic induction.

Investigators used electromagnetic induction and ground-penetrating radar to search for evidence at Newblock Park, which operated as a dump in 1921, Booker T. Washington Cemetery and Oaklawn Cemetery.