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do curling stones have lights

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  • Why do curling stones have lights on them?

  • Why do curling stones have lights on them? The lights are used to indicate hog line violations. The hog line is the thick line running across the sheet 15 feet out from the house. The rock must be released from the shooter’s hand before the rock reaches the hog line.

  • What do the lights on the ice mean in curling?

  • In the official rules of curling, as set by the World Curling Federation, those lights are known as electronic hog line devices. Their job is simple. They ensure, with electronic precision, that the stone was released before crossing the hog line: the red line on the ice marking the point where teams must release the stones or incur a penalty.

  • How does the curling stone work at the Olympics?

  • Every four years, curling grabs the public’s attention at the Winter Olympics. Powered by batteries within the stone, a simple traffic light system is in force. Using heat sensors, it can detect whether a throw is legal or not. Green on the Curling stone is good news 鈥?meaning the throw is legal and counts.

  • What is a traffic light curling stone?

  • Every four years, curling grabs the public’s attention at the Winter Olympics. Powered by batteries within the stone, a simple traffic light system is in force. Using heat sensors, it can detect whether a throw is legal or not.

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