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: Americans Celebrate the Birth of Their Nation. July 4, 1776. It's Independence Day! Today, all across the United States, people are wishing each other a happy Fourth of July. On July 4, 1776, the Second Continental Congress unanimously adopted the Declaration of Independence.