|May29-12, 09:55 PM||#1|
The relationship between absorbtion, emissivity and reflection
As I understand it, the absorption coefficient of a surface of material is the same as its emissivity (due to Kirchoff's law of thermal radiation), and that the net of this and the tranmissibility is
emissivity + reflectivity + transmissibility = 1
Is this a general statement about any radiation, or only about thermal "black-body" radiation?
I presume that the tranmissibility is the initial transmissibility of the surface, since once inside the body of the material, there is absorbtion, which is termed attenuation, in which the transmitted radiation is slowly absorbed as it goes through the body. How are these 2 forms of absorbtion related?
physics news on PhysOrg.com
>> Promising doped zirconia
>> New X-ray method shows how frog embryos could help thwart disease
>> Bringing life into focus
|May30-12, 08:22 AM||#2|
That is a general statement, and a consequence of conservation of energy.
|Similar Threads for: The relationship between absorbtion, emissivity and reflection|
|Measuring emissivity of material based on reflection||Introductory Physics Homework||2|
|Absorbtion,reflection,and emission.||General Physics||1|
|Transmission, reflection, and absorbtion||General Physics||2|
|reflection and absorbtion||Atomic, Solid State, Comp. Physics||5|
|Absorbtion and Reflection of Objects, question||General Physics||2|