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Jean Charles Athanase Peltier

 

 
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Jean Charles Athanase Peltier
 
 
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Jean Charles Athanase Peltier (1785 in Ham (France)
Ham, Somme

Ham is a communes of the Somme d?partement in the Somme d?partement in France in the Picardie region of France....
 - 1845 in Paris
Paris

Paris is the Capital of France and the country's largest city. It is situated on the river Seine, in northern France, at the heart of the ?le-de-France Regions of France ....
) was a French
France

France , officially the French Republic , is a country whose Metropolitan France is located in Western Europe and that also comprises various Overseas departments and territories of France....
 physicist
Physicist

A physicist is a scientist who studies or practices physics. Physicists study a wide range of physical phenomena in many Physics#Major fields of physics spanning all length scales: from atom particles of which all ordinary matter is made to the behavior of the material Universe as a whole ....
.

He discovered the calorific
Thermoelectricity

Thermoelectricity refers to a class of phenomena in which a temperature difference creates an electric potential or an electric potential creates a temperature difference....
 effect of electric current
Electric current

Electric current is the flow of electric charge. The electric charge may be either electrons or ions.The International System of Units unit of electric current intensity is the ampere....
 passing through the junction
Junction

Junction may refer to:*Junction where several traffic routes cross:**junction , a railroad/railway junction**Intersection , a road junction...
 of two different metal
Metal

In chemistry, a metal is a chemical element whose atoms readily lose electrons to form positive ions , and form metallic bonds between other metal atoms and ionic bonds between nonmetal atoms....
s. This is now called the Peltier effect or Peltier–Seebeck effect. The Peltier effect, where current is forced through a junction of two different metals, forms the basis of the small 12/24 Volt heater/coolers sold for vehicle use. By switching the direction of current, either heating or cooling may be achieved. It also forms the basis of the rather expensive, but very stable, junction heated soldering irons, and is used for spot cooling of certain integrated circuits. It is important to realise that junctions always come in pairs, as the two different metals must be joined at two points.






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Jean Charles Athanase Peltier (1785 in Ham (France)
Ham, Somme

Ham is a communes of the Somme d?partement in the Somme d?partement in France in the Picardie region of France....
 - 1845 in Paris
Paris

Paris is the Capital of France and the country's largest city. It is situated on the river Seine, in northern France, at the heart of the ?le-de-France Regions of France ....
) was a French
France

France , officially the French Republic , is a country whose Metropolitan France is located in Western Europe and that also comprises various Overseas departments and territories of France....
 physicist
Physicist

A physicist is a scientist who studies or practices physics. Physicists study a wide range of physical phenomena in many Physics#Major fields of physics spanning all length scales: from atom particles of which all ordinary matter is made to the behavior of the material Universe as a whole ....
.

He discovered the calorific
Thermoelectricity

Thermoelectricity refers to a class of phenomena in which a temperature difference creates an electric potential or an electric potential creates a temperature difference....
 effect of electric current
Electric current

Electric current is the flow of electric charge. The electric charge may be either electrons or ions.The International System of Units unit of electric current intensity is the ampere....
 passing through the junction
Junction

Junction may refer to:*Junction where several traffic routes cross:**junction , a railroad/railway junction**Intersection , a road junction...
 of two different metal
Metal

In chemistry, a metal is a chemical element whose atoms readily lose electrons to form positive ions , and form metallic bonds between other metal atoms and ionic bonds between nonmetal atoms....
s. This is now called the Peltier effect or Peltier–Seebeck effect. The Peltier effect, where current is forced through a junction of two different metals, forms the basis of the small 12/24 Volt heater/coolers sold for vehicle use. By switching the direction of current, either heating or cooling may be achieved. It also forms the basis of the rather expensive, but very stable, junction heated soldering irons, and is used for spot cooling of certain integrated circuits. It is important to realise that junctions always come in pairs, as the two different metals must be joined at two points. Thus heat will be moved from one junction to the other. To make a usable heat pump, multiple junctions are created between two plates. One side will get hot and the other side cold. An effective heat dissipation device must be attached to the hot side to maintain a cooling effect on the cold side. This is usually a heatsink and fan assembly.