tsiwt wrote:Thank You Nuno1980
If you had to do realistic porcelain how would yo go about it, I didn't find it in the link you provided.
I'm very sorry for confusion because I can't understand - you said "specular" (= reflection) in glossy material OR "specular" (
material).
You choose to download any thing for porcelain (glossy material) in LiveDB but unfortunately, LiveDB isn't available on demo and you can buy Octane Render standalone.
I am interested in the link you provided and the formula -
so basically for ethanol -
https://refractiveindex.info/?shelf=org ... age=RheimsB =(1.3571 - 1) / 59.35 * ( .52365508707)
Reflection - 0.022956 ; refractive index - 1.357 ; dispersion coefficient 0.00315075411 ...
I am not sure how you get the RGB color and the transmission. ?
"ethanol" specs at D = 589.3 nm (
enter value of wavelength in micrometers in "refractiveindex.info" site - don't forget this SI (not
nm)):
n_D - 1.3616
v_D - 59.35
transmission is same number to water (T = 0.9983)
I calculated 2 formulas...
B = (
n_d - 1)/
V_d*((0.48613^2*0.65627^2)/(0.65627^2 - 0.48613^2))
B = (
1.3616 - 1)/
59.35*((0.48613^2*0.65627^2)/(0.65627^2 - 0.48613^2))
B = 0.3616/59.35*((0.236322*0.43069)/(0.43069 - 0.23622))
B = 0.3616/59.35*(0.101738/0.19447)
B = 0.00609267*0.523155
-->
B = 0.003187n_d_dispersed =
n_d_original - 10/3*
Bn_d_dispersed = 1.3616 - 10/3*0.003187
-->
n_d_dispersed = 1.351098You can enter these results for specular material (ethanol) settings using Octane Render:
reflection - 1.00
transmission - 0.9983
index of refraction -
1.351098 (= n_dispersed)
dispersion coefficient -
0.003187 (= B)
Transmission - you can select "greysale color" or "RGB color" or...
also I don't understand this part of the formula - F and C = F and C wavelengthes - If wavelength = 589.3 nm then should use F = 486.13 nm and C = 656.27 nm
what is this for?
wavelengthes colors:
F - ultraviolet
C - infrared
D - yellow (visible light)
But you don't change any value of "F" nor of "C" in formula - look my calculations. I'm sorry.
Happy rendering!