Thermodynamics the work of French physicist Nicolas Léonard Sadi Carnot (1824) who believed that engine efficiency was the key that could help France win the Napoleonic Wars. Scots-Irish physicist Lord Kelvin was the first to formulate a concise definition of thermodynamics in 1854 which stated, "Thermo-dynamics is the subject of the relation of heat to forces acting between contiguous parts of bodies, and the relation of heat to electrical agency." The initial application of thermodynamics to mechanical heat engines was extended early on to the study of chemical compounds and chemical reactions. Chemical thermodynamics studies the nature of the role of
19th-century turnpikes in Massachusetts Massachusetts began in 1796, when the first act of incorporation for a turnpike was passed. By 1850, most turnpike corporations had either been dissolved or had stopped collecting tolls. In all, 118 acts of incorporation were passed (ten of these were in the territory that later became the state of Maine). Typical toll rates were twenty-five cents for every coach with additional charges of four cents for every man and horse. The following 19th century turnpikes were chartered and built in Massachusetts: 19th-century turnpikes in Massachusetts In the late 18th century and early 19th century, turnpikes, as opposed to ordinary