Hockey puck

What is it?
Well, we know what a hockey puck IS. It's the little flat black thing that everyone in the hockey match is battling over. But why this? Why would everyone really want to be chasing after this hard little piece of vulcanized rubber?

The gory details
So, a hockey puck. Made of 6 ounces of vulcanized rubber, it is round yet flat, measuring 3 inches in diameter and 1 inch thick. To prevent this little piece of rubber from bouncing on the ice during a game, it's frozen in a bucket of ice prior to the hockey match.

History of the hockey puck
The first hockey pucks were made of wood and cut from tree branches. Before the invention of the puck in 1860, hockey players had been using a hurley ball, which was unmanageable on the ice. Players then cut the awkward ball on each end to form the flat shape of a hockey puck. The first vulcanized rubber hockey puck was used in 1886, and did not have the smooth round circumference of the modern-day hockey puck.

The specialized puck
For younger players, there is a blue, 4-ounce puck, and for training purposes, experienced players will use 10-ounce to 2-pound pucks for wrist strength. Hollow fluorescent pucks are commonly used for road or street hockey. Some pucks even feature plastic ball bearings to be used for non-iced surfaces.

Hockey puck speeds
Hockey pucks can reach speeds of up to 120 miles per hour. If you're on the rink, wear protection. Your body will thank you.