Greeting everyone,
I want to calculate spectral selectivity of my thin film for optical analysis. I already measured the reflectance (R%) but unable to do emmisivity test in due to the unavailability of emmisivity instrument at my place. Is it possible to obtain the spectral selectivity with my reflectance or absorbance data only?is there any other formula that can be used?. your knowledge is highly appreciated
thank you in advance for your help :)
In my case, spectral selectivity(ratio):absorbtance/emmitance. I have difficulties to obtain the emmitance data through utilization from reflectance data(R%). Is there any formula that relates "My reflectance (R%) data " and also "consideration from A.M 1.5 reference/blackbody"?
I am not so familiar with this. I suppose you have to differentiate between reflection and reradiation of light.
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