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Each one is described mathematically as a field. The gravitational force is modelled as a continuous classical field. The electromagnetic force, carried by the photon, creates electric and magnetic fields, which are responsible for chemical bonding and are used in electrical technology.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.