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abstraction > hypothesis > theory > law > electromagnetic law

electromagnetic law
subject			fact

electromagnetic law	has domain electromagnetism
	is a kind of law
law	has discoverer
theory	has validity correct or incorrect with caveats
	has author or reasearch group
	has date or a range of dates for which the theory was active

Kinds of electromagnetic law :

• Coulomb's law (2 facts) - The force between two charged particles varies directly as the size of the charges and inversely as the square of the distance between them.
• Lenz's law (2 facts) - The current induced by an electromotive force will appear in such a direction that it opposes the charge that produced it.