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.
Independence Day in the United States. Independence Day is annually celebrated on July 4 and is often known as the Fourth of July. It is the anniversary of the publication of the declaration of independence from Great Britain in 1776. Patriotic displays and family events are organized throughout the United States.
The History of Independence Day. On July 4, 1776, the thirteen colonies claimed their independence from England, an event which eventually led to the formation of the United States. Each year on July 4th, also known as Independence Day, Americans celebrate this historic event. Conflict between the colonies and England was already a year old when the colonies convened a Continental Congress in Philadelphia in the summer of 1776.