Form factor (radiative transfer)

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In physics, form factor (usually written e) of a material, sometimes called emissivity, 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

H = Ae \sigma\ T^4.\,

[edit] References

Young, Hugh (2004). "17", University Physics 11th Edition. Addison Wesley, 669. ISBN 0-8053-9178-9. 

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and in dutch it is nown