Why can you not see through fog when it’s ahead of you but you can once you’re in it?
In: Physics
Okay, let’s imagine a droplet of fog. It’s a sphere of water. Rays of light coming from every direction will enter the droplet and get reflected and scattered.
Now imagine a cloud of these droplets. Outside the cloud, there is a lot of environmental light to reflect and scatter. Inside the cloud, there is less light because much has been reflected away.
If you are in a car in the fog and turn on your high beams, you’re blinded and see glowing fog in front of you. Using dimmer light that’s more directionally focused causes less scattering, so you can see better.
tldr; less light scattering inside the fog.
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