James+Prescott+Joule+09

​ Picture of James Prescott Joule To see this picture in its original location, go to 
 * <**[|**http://en.wikipedia.org/wiki/File:Joule_James_sitting.jpg**] **>**

 **JAMES PRESCOTT JOULE **

James Prescott Joule was an English physicist. 
 * Occupation **

December 24, 1818 Salford, England October 11, 1889 (aged 70) Sale, Cheshire, England Map of England To see this picture in its original location, go to Google Earth.  <span style="color: #000000; font-family: Georgia,serif;"> Joule helped by working in the family brewery from 1837 to 1856. He was fascinated by the subject of electricity. In 1840 he published Joule's Law. In 1848 he wrote a paper on the kinetic theory of gases and published it. Joule worked part time as a scientist, and part time as a brewer. He funded himself with the money he made by brewing.
 * <span style="font-family: Georgia,serif;">Born **
 * Died**
 * Career**

Joule's Law states that H (Heat) = I (Current) x V (Voltage) x T (Time the current is allowed to flow). This basically means that energy produces heat when it flows through something. The longer it flows through something, the more heat it produces.
 * Science Explanation**

In 1848 he wrote a paper on the kinetic theory of gases. The paper stated that the temperature of most gasses cools when they expand because the molecules pulls apart. This idea led eventually to the principle of refrigeration and air-conditioning systems.

He was also known for creating the first law of thermodynamics. This law of thermodynamics says that energy can not be destroyed or created. It can only change form. In case you are wondering why finding out that energy can only change form is so important, think of it this way. If you drink an energy drink and play basketball, you would think that energy would be gone and destroyed, right? Wrong! Joule proved that energy can not be destroyed. Instead, it just changes form.

Joule was born on Christmas Eve. His father was a wealthy brewer. His lab was in his father's cellar. The international unit of energy, the joule, is named in his honor.
 * <span style="color: #000000; font-family: Georgia,serif;">DID YOU KNOW **

Joule's Tombstone <[]>

CITATIONS Balchin, Jon. //100 Essential Scientists.// New York: Arcturus, 2003. Print.

Encyclopedia Britannica. "Heat." //Encyclopedia Britannica Online School Edition,// 2009. Web. September 22, 2009.

Super Scientists. “James Prescott Joule.” //Super Scientist//. California Energy Commission, 2006. Web. September 22, 2009.

Webmaster. “James Prescott Joule.” //Corrosion Doctor//. Webmaster, August 1999. Web. September 22, 2009.

PICTURE CITATIONS Google Earth. "Salford, England" //Imagery dates: April 3, 2003 - March 5, 2005//. Web. September 22, 2009.

Wikipedia, "James Prescott Joule." //Wikimedia Foundation Inc//. September 20, 2009. Web. September 22, 2009.