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“Our study completes the work of Albert Einstein in his attempt to relate gravity and electromagnetism forces in the same geometric theory,” Monjo, a professor of mathematics at Saint Louis University in Spain, told Salon.

That is, the electricity that drives electromagnetism has no resistance, and constantly runs in a closed circuit without the supply of electricity.

Dark matter is a type of hypothetical matter that does not interact with electromagnetism or light.

Fundamental forces such as gravity and electromagnetism are reciprocal, where two objects are attracted to each other or are repelled by each other.

"In the 19th century, it was hypothesised that monopoles could exist. But in one of his foundational equations for the study of electromagnetism, James Clerk Maxwell disagreed."