Name one thing that we use today that was invented as a result of his research. It is a wielding by using an electric current to melt both the metal to be wielded and the wielding rod or electrode that is being added. This is usually used now a day in auto repair shops in order to cover the holes caused by rust with steel and many more. Find a picture of some of the apparatus that he used on his experiment. In the most famous apparatus he built for this end, now called the Joule apparatus , a descending weight attached to a string caused a paddle immersed in water to rotate and heat the water.
Joule supposed that the gravitational potential energy lost by the weight in descending was equal to the thermal energy heat gained by the water by friction with the paddle. In this experiment, the friction and agitation by the paddle-wheel of the body of water, trapped in an insulated barrel, caused heat to be generated which, in turn, increased the temperature of the water.
Using these values, Joule was able to determine the mechanical equivalent of heat. His father, a wealthy brewer, was eager to please his young son; he provided as many books as the child could read and eventually built for him a home laboratory. What evidences is there that Joule has an exceptional education? Why was Joule so interested in electromagnets? Electromagnets, particularly the electromagnetic fields, where he constructed an electromagnetic engine, which he described in Sturgeon's "Annals of Electricity", can replace steam; but later on he had to admit their inefficiency.
In the same year, and in the three years following, he constructed other electro-magnetic machines and electro-magnets of novel forms; and experimenting with the new apparatus, where he obtained results of great importance in the theory of electro-magnetism. Describe something Joule believed that contradicted the beliefs of his peers. But Joule really claimed that his studies had demonstrated conversion of heat into work but that he was planning further experiments. Eventually, Thomson was able to accept the theory of Joule and became partners later on.
Describe the experiment that Joule tried to conduct in his honeymoon. He deduced that the water at the bottom of the fall should be hotter than at the top due to the work of the water running down the fall.
Name one thing that we use today that was invented as a result of his research. It is a wielding by using an electric current to melt both the metal to be wielded and the wielding rod or electrode that is being added. This is usually used now a day in auto repair shops in order to cover the holes caused by rust with steel and many more. Find a picture of some of the apparatus that he used on his experiment. In the most famous apparatus he built for this end, now called the Joule apparatus , a descending weight attached to a string caused a paddle immersed in water to rotate and heat the water.
Joule supposed that the gravitational potential energy lost by the weight in descending was equal to the thermal energy heat gained by the water by friction with the paddle. In this experiment, the friction and agitation by the paddle-wheel of the body of water, trapped in an insulated barrel, caused heat to be generated which, in turn, increased the temperature of the water. Using these values, Joule was able to determine the mechanical equivalent of heat.
Specifically, Joule had experimented on the amount of mechanical work generated by friction needed to raise the temperature of a pound of water by one degree Fahrenheit and found a consistent value of Joule contended that motion and heat were mutually interchangeable and that, in every case, a given amount of work motion would generate the same amount of heat. Moreover, he also claimed that heat was only one of many forms of energy electrical, mechanical, chemical and only the sum of all forms was conserved.
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Do food processors have electromagnets? Are all electromagnets magnetic? Are electromagnets considered permanent magnets'? What are the electromagnets called that are used at junkyards? What is the symbol for the joule? Study Guides. Trending Questions. Still have questions? In his most famous experiment. Joule attached some weights to strings and pulleys and connected them to a paddle wheel inside an insulated container of water.
Then he raised the weights to an appropriate height and slowly dropped them. As they fell, the paddle wheel began to turn, stirring up the water.
James Prescott Joule experimented with engines, electricity and heat throughout his life.
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