Why can you not see through fog when it’s ahead of you but you can once you’re in it?
In: Physics
Let’s say you have big 1km x 1km sheets of fog. Seeing through one or maybe two won’t be perceptibly different than seeing through normal air. If you continue to stack them, you still see through the first few but it’ll get gradually harder until light is effectively blocked from letting you see clearly.
So being inside the fog cloud is like being surrounded by these sheets (more like shells, instead). You see through the first few, but with more fog, you see less. This all of course depends on fog density, too, but the gist is there.
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