Curling

Curling is a sport in which players slide stones on a sheet of ice towards a target area that is segmented into four concentric circles. It is related to bowls, boules, and shuffleboard. Two teams, each with four players, take turns sliding heavy, polished granite stones, also called rocks, across the ice curling sheet towards the house, a circular target marked on the ice. Each team has eight stones, with each player throwing two. The goal is to accumulate the highest score for a game; points are scored for the stones resting closest to the centre of the house at the conclusion of each end, which is completed when both teams have thrown all of their stones once. A game usually consists of eight or ten ends.

The player throwing the stone creates a curved trajectory, known as "curl", by gently rotating the stone as they release it. The stone's path can also be influenced by two sweepers using brooms or brushes, who move alongside it and sweep the ice in its path. Sweeping reduces friction, allowing the stone to travel farther and in a straighter line, with less curl. This is known as the Thin Film Model, where the created friction makes a smoother path for the rock to travel down. Strategy and teamwork play a crucial role in selecting the optimal path and final placement of the stone, and the skill of the players determines how accurately the stone follows the intended course.