James Prescott Joule :: biographies bio

- James Prescott Joule -- Born 1818 Died 1889 -Joules career in the sciences began quite early in his life. As early as 16, Prescott was below the tutelage of James Dalton. His investigates soon followed in a laboratory he built in his familys basement. By this quantify, some scientists had begun hypothesizing on the interrelationships between heat, electricity, and magnetics - and by the 1840s Joule had formulated not only the well cognize Joules Law but also a principle for conservation of energy. In the 1850s, Joule worked together with another scientist to come up with the Joule-Thomson effect. maybe his most well-known experiment is his Paddle wheel experiment, which led to an arrest of the conversion of energy from one form to another.His experimentations were not limited to barely those bounded in the areas of physics. Joule was an inventor as well - his accomplishments include the arc welding process and a displacement pump.As with all(prenominal) scientist, there i s 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 determine of the current 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 warning gas is independent of volume.1- Paddle Wheel Experiment - - 1849 -This experiment involved the dropping of weights from a specific height these weights would churn the weewee inside of the bucket and increase 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 travail for anyone in Physi cs, this discovery was key in understanding the relationships between press of gas and its temperature. The Joule-Thomson Effect shows that an insulated gas will lower its temperature as the pressure sensation is decreased without doing any work.