The entire city was an ice rink. A half-foot of new snow, followed by a freak warm spell with meltwater running on the sidewalks - then a refreeze - had swirled in to create the worst conditions ...
The surface of the ice melts in contact with a solid, forming a lubricant layer which is self-perpetuating, as greater weight and slippage are applied to it. This cooperative phenomenon makes the ice ...
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