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Form factor (radiative transfer)

 

 
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Form factor (radiative transfer)
 
 
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In physics
Physics

Physics is the natural science which examines basic concepts such as energy, force, and spacetime and all that derives from these, such as mass, charge, matter and its Motion ....
, form factor (usually written e) of a material, sometimes called emissivity
Emissivity

The emissivity of a material is the ratio of energy Radiation by a particular material to energy radiated by a black body at the same temperature....
, relates the proportion of energy transmitted by that object which can be transferred to another object.

For instance, an object with surface area A transmits a heat current H according to the equation








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In physics
Physics

Physics is the natural science which examines basic concepts such as energy, force, and spacetime and all that derives from these, such as mass, charge, matter and its Motion ....
, form factor (usually written e) of a material, sometimes called emissivity
Emissivity

The emissivity of a material is the ratio of energy Radiation by a particular material to energy radiated by a black body at the same temperature....
, relates the proportion of energy transmitted by that object which can be transferred to another object.

For instance, an object with surface area A transmits a heat current H according to the equation