19th century in science Carnot captured some of the ideas of thermodynamics in his discussion of the efficiency of an idealized engine. Sadi Carnot's work provided a basis for the formulation of the first law of thermodynamics—a restatement of the law of conservation of energy—which was stated around 1850 by William Thomson, later known as Lord Kelvin, and Rudolf Clausius. Lord Kelvin, who had extended the concept of absolute zero from gases to all substances in 1848, drew upon the engineering theory of Lazare Carnot, Sadi Carnot, and Émile Clapeyron–as well as the experimentation of James Prescott Joule on the interchangeability of mechanical, chemical,
The First Church of Christ, Scientist Restoration of the library’s 81,000-square foot portion of the building began in 1998, and the final renovation and additional construction were completed in 2002. The First Church of Christ, Scientist The First Church of Christ, Scientist is the administrative headquarters and mother church of the Church of Christ, Scientist, also known as the Christian Science church. Christian Science was founded in the 19th century in Lynn, Massachusetts, by Mary Baker Eddy with the publication of her book "Science and Health" (1875). The First Church of Christ, Scientist, is located in the 14.5-acre Christian Science Center in Boston, Massachusetts. The center