Why can you not see through fog when it’s ahead of you but you can once you’re in it?
In: Physics
Imagine the particles suspended in air, vertical sheets or layers. Every layer blocks some part of the vision. Suppose these are the layers:
L1: .. . . .
L2: . . … .
L3: . . . . ..
L4: . . …
So now someone standing at L1 (facing L4) can partly see L2 (because of the gaps in L1), even less of L3 and none of L4.
So when you are ‘in’ the fog, you can see things close to you because there are not enough ‘layers’ or suspended particles covering the things up close (say at L2), but you can’t see ahead of you because the ‘layers’ stack up (say at L4).
I hope 5 year olds can get this.
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