When I need to turn a page, water adds a bit more friction making it easier to turn the page. Yet when driving, water reduces friction between wheels and the road.
Why can it do both?
In: 3
It depends on the thickness of the layer of water and the surfaces involved. In the case of paper, the water wants to soak both into the paper And your skin but there’s not enough water to do both. So the water compromises and tries to stick to both.
In the case of car tires and roads there’s more than enough water to keep the two separate and the water doesn’t want to soak into the rubber tires or oily asphalt (they use some super thick petroleum byproducts to make asphault) and tries to repell them both. If there’s enough water and the car is moving fast enough this can cause the car to “surf” on a thin layer of tire-repelling water. This is known as Hydroplanning and it can lead to a Very Bad Day.
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