There's a lot to learn about the science and math behind how night vision works. In this video Kevin explains some important factors regarding tube specs, as well as what the numbers mean and how they correlate on the data sheets provided, when you buy from Custom Night Vision.

www.customnightvision.com
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0:00 - Intro
0:26 - Overview
1:15 - Photocathode Sensitivity \ Gain
2:26 - Signal to Noise Ratio
3:15 - Equivalent Background Illumination
4:55 - Resolution
6:03 - Halo
6:59 - Outro