system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:At night time, why do windows appear to act as mirrors and lower the visibility through the glass? If you want to see outside the window at night, why is it best to turn out the lights?
gpt
Glass reflects a certain percentage of light passing through it. When you are on the darker side of the window, the light coming through the window is much brighter than the reflection. When you are on the bright side, the reflected light is much brighter than the light coming through the glass.