- #1
sliwintm
- 1
- 0
Hi all,
I am trying to understand why emissivity changes with direction. Specifically within the thermal band [7-14micron] and while looking at non-metallic surfaces (like a flat water surface).
What I'm thinking is that since vibrating atoms are basically accelerating charges and create EM waves that the density of the materials I'm observing cause restrictions to the atomic vibration and thus the emission angle of the light.
My background is in engineering. I'm just trying to get some enlightenment on the subject.
I am trying to understand why emissivity changes with direction. Specifically within the thermal band [7-14micron] and while looking at non-metallic surfaces (like a flat water surface).
What I'm thinking is that since vibrating atoms are basically accelerating charges and create EM waves that the density of the materials I'm observing cause restrictions to the atomic vibration and thus the emission angle of the light.
My background is in engineering. I'm just trying to get some enlightenment on the subject.