The fact that current carrying loops experience a net torque in a magnetic field is the principle behind the electric motor, where the electrical energy involved in establishing a current is converted into the mechanical energy of rotating a shaft.
From 1776 until the present day, July 4th has been celebrated as the birth of American independence, with typical festivities ranging from fireworks, parades and concerts to more casual family gatherings and barbecues. Play video Declaration of Independence. Play video History of the Fourth of July.
Independence Day also known as 4th of July is the birthday of the United States of America. It is celebrated on July 4th each year in the United States.It is the anniversary of the day on which the Declaration of Independence was adopted by the Continental Congress-July 4, 1776.The day they announced to the world that the 13 colonies no longer belonged to Great Britain.ndependence Day also known as 4th of July is the birthday of the United States of America. It is celebrated on July 4th each year in the United States.