James Prescott Joule :: biographies bio

- crowd Prescott Joule -- Born 1818 Died 1889 -Joules career in the sciences began quite early in his life. As early as 16, Prescott was under the tutelage of James Dalton. His experiments soon followed in a laboratory he built in his familys basement. By this time, many a(prenominal) scientists had begun hypothesizing on the interrelationships between heat, electricity, and magnetism - and by the 1840s Joule had theorise non only the well known Joules Law but also a principle for conservation of energy. In the 1850s, Joule worked together with another scientist to descend up with the Joule-Thomson effect.Possibly his most well-known experiment is his Paddle wheel experiment, which led to an understanding of the conversion of energy from one form to another.His experimentations were not limited to simply those bounded in the areas of physics. Joule was an inventor as well - his accomplishments included the arc welding process and a displacement pump.As with every scientist, the re is a list of Joules failures. He attempted to design a motor that would provide infinite power but after many failed attempts realized it was unobtainable. - Joules Law -- 1840 -Simply stated, Joules Law relates how heat is dissipated by a resistor. Joules Law states that the heat given off is equal to the square of the circulating(prenominal) multiplied by the resistance of the resistor and the amount of time passed.This law also relates itself to Thermodynamics, stating that at constant temperature the internal energy of an ideal gas is nonparasitic of volume.1- Paddle Wheel Experiment - - 1849 -This experiment involved the dropping of weights from a specific height these weights would churn the water inside of the bucket and profit the overall temperature of the water slightly. This relationship served as the foundation to the First Law of Thermodynamics- Joule-Thomson Effect -Although relatively easy to grasp for anyon e in Physics, this discovery was key in understanding the relationships between pressure of gas and its temperature. The Joule-Thomson Effect shows that an insulated gas will lower its temperature as the pressure is decreased without doing any work.