a person is driving on an extremely foggy day and cannot see the road ahead very well. They decided to turn on the headlights on the car, even after turning on the headlights, the person cannot see the road ahead very well, why does the light not helps see through the fog

Answer 1

The light from the headlights is scattered and reflected by the fog particles, creating a phenomenon known as "light scattering." Fog consists of tiny water droplets or ice crystals suspended in the air, which scatter light in all directions rather than allowing it to pass through. Due to this scattering, the light gets diffused and doesn't effectively penetrate the fog. As a result, the visibility is still poor even with the headlights on.