system
Given the following post, respond as if you're commenting on Reddit:
human
How do polarised lenses block the glare from water?
gpt
Light wave energy can oscillate up and down, side to side,  or any angle in between.  The molecules in the lenses or lens coating allow only one angle of polarized light to pass through and block all others. If the angle is chosen to allow all vertical oscillations to pass, then any horizontal ones are blocked. Light glancing off water at a low angle are primarily horizontally polarized.