An isothermal process means that the temperature of the gas does not change during the expansion or compression. An isobaric process means that the pressure of the gas does not change while in an isovolumetric (isochroic) process the volume remains constant.
The Liberty Bell is an iconic symbol of American independence, located in Philadelphia, Pennsylvania. Formerly placed in the steeple of the Pennsylvania State House (now renamed Independence Hall), the bell today is located in the Liberty Bell Center in Independence National Historical Park.T]he Liberty Bell is the most venerated object in the park, a national icon.
The helmet and the horse's head crest represent New Jersey's independence as a state. They also represent New Jersey's status as one of the first states. In 1787 New Jersey was the third state to sign the U.S. Constitution. The woman holding a staff with a liberty cap on top is Liberty, who represents freedom. In ancient Rome, former Roman slaves saw a liberty cap as a badge of freedom.